SKU: 19252756752

Principles of Simple Interest

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Description

Principles of Simple InterestCOURSE OVERVIEW: Welcome to the Principles of Simple Interest course. This program will equip you with the foundational mathematical concepts, formulas, and practical decision making skills required to understand, calculate, and apply simple interest in real business situations. You will explore how interest works, how time and rates influence borrowing and lending, and how organisations and individuals use simple interest principles to make informed

COURSE OVERVIEW:

Welcome to the Principles of Simple Interest course. This program will equip you with the foundational mathematical concepts, formulas, and practical decision-making skills required to understand, calculate, and apply simple interest in real business situations. You will explore how interest works, how time and rates influence borrowing and lending, and how organisations and individuals use simple-interest principles to make informed financial decisions. This course also examines promissory notes, loan terms, interest-rate conversions, and the specialised rules used in business and banking environments.

This course begins by examining the concept of interest and the relationship between simple interest and the time value of money, followed by how this principle is applied across real business scenarios. You will explore simple interest expressed as a percent, how to work effectively with percents, and how percentage calculations apply to borrowing, investing, invoicing, pricing, and supplier-payment arrangements. This section also explains how to deal with mixed-number and fractional percents when calculating interest, the impact of time on simple-interest accumulation, and how this affects business decisions such as payment timing, credit terms, and contract negotiations. You will then explore the simple-interest formula, including how to apply it in real financial situations involving customers, vendors, and service contracts. This section also examines loans in disguise, such as hidden financing within repayment plans, discounts, or cash-flow arrangements.

You will then explore how to calculate simple interest across various loan structures. This includes calculating interest on standard loans, loans with terms in months, and loans calculated using the exact method or the bankers’ rule. You will explore how to calculate loans with terms in weeks and how these short-term structures affect cost and profitability. This section also demonstrates how to find the principal, how to use the balance principle, how to find the simple-interest rate when other variables are known, and how to determine the time required for a given amount of interest to accrue. Throughout this section, practical business examples show how organisations evaluate finance costs, supplier terms, and lending opportunities.

A further part of the program examines promissory notes, including how they function, how to determine a note’s term from its dates, and how simple interest is calculated in leap years. You will explore how to identify loan dates and maturity dates, how to calculate terms across multiple years, and how to determine precise dates for financial planning. This section also explores how simple interest applies to non-annual time periods and how to convert between annual and non-annual simple-interest rates. You will learn how to convert from non-annual to annual rates, convert from annual to non-annual rates, and convert between other units of time so that comparisons, financial statements, and proposals remain accurate and consistent.

By the end of this course you will be able to understand simple-interest concepts, calculate interest using a variety of methods, determine loan terms, convert interest rates across time units, identify hidden loan structures, and apply these principles to real-world business decisions involving finance, investment, budgeting, and corporate planning.

LEARNING OUTCOMES:

By the end of this course, you will be able to understand:

  • The concept of interest
  • Simple interest and the time value of money - How to use this principle within real business situations?
  • The simple interest as a per cents
  • How to work with per cents? - How to use this principle within real business situations?
  • How to deal with mixed number and fractional per cents when calculating simple interest?
  • The impact of time on simple interest - How to use this principle within real business situations?
  • The simple interest formula - How to use this formula within real business situations?
  • What is meant by loans in disguise?
  • How to calculate simple interest for a loan? - How to use this principle within real business situations?
  • How to calculate loans with terms in months? - How to use this principle within real business situations?
  • The exact method to calculate simple interest - How to use this principle within real business situations?
  • How to calculate simple interest using the bankers’ rule? - How to use this principle within real business situations?
  • How to calculate loans with terms in weeks? - How to use this principle within real business situations?
  • How to find principal? - How to use this principle within real business situations?
  • How to use the balance principle?
  • How to find the simple interest rate? - How to use this principle within real business situations?
  • How to find time? - How to use this principle within real business situations?
  • The promissory notes
  • How to find a note’s term from its dates? - How to use this principle within real business situations?
  • How to calculate simple interest in leap years? - How to use this principle within real business situations?
  • How to find loan dates and maturity dates? - How to use this principle within real business situations?
  • How to find terms across multiple years? - How to use this principle within real business situations?
  • How to find dates across multiple years? - How to use this principle within real business situations?
  • How to use non-annual interest rates? - How to use this principle within real business situations?
  • How to convert from a non-annual to an annual simple interest rate?
  • How to convert from an annual to a non-annual simple interest rate? - How to use this principle within real business situations?
  • How to convert between other units of time?

COURSE DURATION:

The typical duration of this course is approximately 2-3 hours to complete. Your enrolment is Valid for 12 Months. Start anytime and study at your own pace.

ASSESSMENT:

A simple 10-question true or false quiz with Unlimited Submission Attempts.

CERTIFICATION:

Upon course completion, you will receive a customised digital “Certificate of Completion”.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 19252756752

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Alex Bentley
Houston, US
★★★★★ 5
Solid Option for a Sunscreen Spray! Nice Even Mist!
Item Package Quantity: 1
I’ve been using the Naked Sundays Hydrating Glow Mist SPF 50+ and overall I’m really impressed. One thing I was a little concerned about at first is that it does contain alcohol, so I expected it might be drying. Surprisingly, it hasn’t dried my skin out the way other similar products have, which is a big plus for me. The scent is pleasant and not overpowering. It doesn’t have that harsh sunscreen smell that some sprays do, so it’s easy to reapply throughout the day without feeling like you’re coating yourself in fragrance. In terms of finish, it’s not completely non greasy, but it’s also not overly heavy. I would call it slightly greasy, but noticeably less so than most sunscreen sprays I’ve tried. It gives a bit of a glow without feeling suffocating on the skin. One of my favorite things about this product is the spray itself. The mist is very fine and even, which makes application quick and easy without leaving blotchy spots. Overall, it’s a solid option if you want a convenient SPF mist that feels lighter than most, smells good, and doesn’t leave your skin feeling dried out.
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Reviewed in the United States on April 24, 2026
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Colette
Grantham, US
★★★★★ 5
Glowing face with sun protection. No fuss, no muss!
Item Package Quantity: 1
Wow, I love this stuff. It does make your skin hydrated and glow with health while protecting it from the sun. No shiny oil, just glow, and best of all, no need to mess up your makeup reapplying sunscreen. You can use it to set your makeup for extra protection (I still use sunscreen under makeup). The mist comes out so fine and even, no drips or glob. The scent is light and fades quickly. The best I've dried out of all the other brands.
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Reviewed in the United States on May 20, 2026
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Anne L
Dallas, US
★★★★★ 5
Lightweight and glowy
Item Package Quantity: 1
I’ve been using the Naked Sundays SPF 50 Hydrating Sunscreen, and it’s quickly become a staple — especially for long days outside and on the tennis court. The texture is lightweight and smooth, and it blends in beautifully without leaving a white cast or greasy feel. What I love most is the finish: it gives a natural, healthy glow without looking shiny or heavy. It layers really well under makeup and doesn’t pill, even when I’m reapplying throughout the day. I also appreciate how hydrating it feels without clogging pores or causing breakouts. Performance-wise, it holds up well during activity and sweating (which matters for me during matches). The packaging is easy to toss in a tennis bag for quick reapplication. If I had to note one thing, it’s slightly pricier than drugstore options — but the quality and wearability make it worth it. Best for: everyday wear, outdoor sports, and anyone wanting high SPF protection with a comfortable, skin-like finish. Would absolutely repurchase.
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Reviewed in the United States on March 17, 2026
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martha ramirez
Draper, US
★★★★★ 1
Stings! Waste of money! Doesn’t accept returns!
Item Package Quantity: 1
Very disappointed with this spray sunscreen. Although I’m usually not sensitive to sunscreens or face creams in general, this product made my eyes burn and tear up so much and so fast that I’m not able to use it. Such a waste. I even tried applying while covering just my eyes to avoid that area and it still stings. And it also goes on greasy, definitely not cute glowy looking. It is not a flattering shine. For the price I’m very disappointed and even upset that I didn’t notice before buying that you cannot return it. Don’t waste your money.
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Reviewed in the United States on June 6, 2026
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Jen Reviews
West Palm Beach, US
★★★★★ 5
☀️ Holy Grail SPF Mist! especially for makeup days 💦
Item Package Quantity: 1, Item Package Quantity: 1
If you hate the feeling of greasy sunscreen but still want serious protection, this is the glow-up you’ve been waiting for. I use this as the last step in my morning skincare and as a top-up over makeup throughout the day. It’s lightweight, non-greasy, and gives a dewy finish without looking oily, just a fresh, hydrated glow ✨ The mist is fine and even (no big droplets or weird stickiness), and it dries down fast. No white cast, no clogged pores, no breakouts. Just SPF 50+ that actually works with your makeup instead of wrecking it. I’ve even used it midday at Disneyland and didn’t burn once, and I’m someone who burns if I think too hard about sunshine 🥵 Helpful hint: Shake it well before spraying, and hold it about 6 inches from your face for a nice even mist. One pass usually does the trick, but I like to go back over my nose and cheeks for extra protection ☁️ It also doubles as a midday makeup refresher, especially when your foundation starts looking a little dry 🧴 I brought this with me on a full weekend trip to Disneyland and it absolutely earned its spot in my park bag 🎒 I was in the sun all day, both days, and didn’t burn at all, even with minimal shade and back-to-back rides 🎢 It layered like a dream over makeup, didn’t feel heavy, and made touch-ups fast and easy in between churros. This mist officially passed the Disneyland test. 🎡☀️💕
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Reviewed in the United States on September 19, 2025

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