Question

10. A sum becomes 715 times itself in three years at
simple interest. Find the rate of interest.
(A) 1323% p.a.
(B) 12213% p.a.
(C) 13/3% p.a.
(D) 12/3% p.a.​

Answer 1

Answer:

let p =100

amount= 71500

therefore Interest =71500-100=71400

using SI formula

SI =P*T*R/100

71400=100*3*R/100

71400*100=300R

R=7140000/300

R=23800%