Question

The simple interest of 4 years of a sum is 1 / 5 of its principle the rate of interest is

Answer 1

hello Frnd

here is your answer

Let principal amount = P
Simple interest = P/5
Time = 4 yrs
Rate = R

As, Simple Interest = P × R/100 × Time

P/5 = P × R/100 × 4

R/100 = P / 20P

R = 100 /20

R = 5%

Hence rate of interest is 5% Per annum



hope it helps
#jerri