Question

a sum of money put at simple interest trebles itself in 12 years find the rate percent​

Answer 1

Step-by-step explanation:

Let s.i be 3x

so P =A-S.I

3x-x

=2x

Rate =S.i *100÷P*T

3x*100÷2x*12

Ans 12.5%

Answer 2

Step-by-step explanation:

let the amount be X

amount in 3 years 3X

S.I=P.R.T/100

3X=X.R.12/100

R=100/4

R=25%