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Mathematics / Commercial Math

Mathematics / Commercial Math

Percent means ""out of hundred"". Percentage is a way of expressing a number or ratio as a fraction where the denominator is 100.
Any fraction or decimal can be converted into percentage form by converting into equivalent fraction out of 100. The numerator can then be written as a percent with a symbol of % added to it.
Percentages are used for comparison of numbers, in transactions like discount and interest rate.

Profit and Loss When you do a business transaction like selling things, if you gain some amount in the transaction that amount is called the profit and if you lose some amount then it is called loss.
Learn to deduce the profit and loss in different transactions.
Learn the meaning of Marked price, selling price and discount, and get an idea of profit and loss on day to day dealings. Solve Simple problems related to Profit and Loss and Discount, including inverse working.

Simple Interest: When money is borrowed, interest is charged on the amount borrowed for a specific period of time. This is called simple interest. The borrower has to pay back the lender the sum of the principal amount and the total interest for the specified period of time.
Simple interest is usually used for a short period.

Compound Interest: For longer periods compound interest is calculated. In compound interest the interest is added to the principal amount after a specified time interval and then the interest is calculated on the new principal amount computed.
Learn to calculate simple interest and compound interest.

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