Recalling Ratios and Percentages We know, ratio means comparing two quantities. A basket has two types of fruits, say, 20 apples and 5 oranges. Then, the ratio of the number of oranges to the
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Finding Discounts Discount is a reduction given on the Marked Price (MP) of the article. This is generally given to attract customers to buy goods or to promote sales of the goods. You can find th
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Sales Tax/Value Added Tax/Goods and Services Tax The teacher showed the class a bill in which the following heads were written. Sales tax (ST) is charged by the government on the sale of an ite
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Compound Interest You might have come across statements like “one year interest for FD (fixed deposit) in the bank @ 9% per annum” or ‘Savings account with interest @ 5% per annu
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Deducing a Formula for Compound Interest Zubeda asked her teacher, ‘Is there an easier way to find compound interest?’ The teacher said ‘There is a shorter way of finding compoun
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Applications of Compound Interest Formula There are some situations where we could use the formula for calculation of amount in CI. Here are a few. (i) Increase (or decrease) in populatio
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