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7. If Farahin invested RM2000 and after t years, she got RM6250 with interest 5.5% compounded every six months. How long was the investment? [ans:21
7. If Farahin invested RM2000 and after t years, she got RM6250 with interest 5.5% compounded every six months. How long was the investment? [ans:21 years]
8. How long it will take for a sum of money to quardruple at 10% compounded annually? [ans:11.51%].
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