Question

If the S. I obtained in 4 years is 3/5 times of the princinple,find the rate of interest

Answer 1

use as short formula in as types of questions
s.i./p = RT/ 100
since s.i. is 3/5 times of principle so we have to assume s.i. 3 and p 5
now. 3/5 =4R/ 100
R= 15%