Question

at what rate per cent of simple interest will a sum of money double itself in 12years​

Answer 1

Let,

Principal, P = Rs. 100;

Amount, A = Rs. 200;

Time = 12 years;

Interest = Rs. 100;

Rate of interest

=Total Interest/Given Time

=100/12

=8 1/3 %

I.e 8.3333..%