Question

a sum of money placed at compound interest becomes double in 5year in how many years it would 8times of itself at the same rate of itself ​

Answer 1

Answer - 15

Formula for this is n2= n1 ^(t2/t1)

n= Number of times

t= years

n2=8 =2^3

n1=2(doubles)

t2=? (we have to find)

t1=5

Applying this in formula

2^3=2^(t2/5)………2 cancelled each other

3=t2/5

t2= 15(answer)

Step-by-step explanation:

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