Question

8. A certain sum of money doubles itself at simple interest in 8 years. In how many years will it be three times at the same time​

Answer 1

Answer:

9.53yrs

Step-by-step explanation:

let sum be x

t=8 yrs

p=2x

si=2x-x=x

r=si*100/t*p

100x/16x

6.25rate per annum

since rate is same,

t=si*100/r*t

10000x/625*2x

=200/21

=9.53