Question

At a certain rate of interest, a certain sum of money become double of itself in 10 years.In what time will ot become triple of itself?​

Answer 1

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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