A sum of money becomes double in 10years at a certain rate of interest – InterviewSolution

1.	A sum of money becomes double in 10years at a certain rate of interest . Find the rate of interest .
Answer» -step EXPLANATION:LET sum =X. Then, S.I. =x and Time =10 years.∴Rate=(x×10100×x)% =10%Now, sum =x, S.I. =2x, Rate =10%∴ Time =(x×10100×2x)years=20 years.

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