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Mathematics formula

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can v use the formula of compound interest in IGCSE i.e...............A= p(1+ r/100)^n
 
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Ofcourse you have to I think! If I'm thinking right they even ask you to calculate if One bank has a 5% increase each year [Compound] and other +1000 per annum. Calculate which one is more worthy?

In short; even if it isnt in syllabus, if you gets you the answer! (y) Good job!
 
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