Question

54. One person credited Rs.100. After 2
years he returns Rs. 150. Find the rate of
interest per year
(b) 20%
(d) 50%
(a) 10%
(C) 25%
explain step by step​

Answer 1

Answer:

25%

Step-by-step explanation:

Given,

principal (p) = Rs. 100

Time (T) = 2 yrs

Amount (A) = Rs. 50

so, SI = Amount - principal

= 150 - 100

= 50

so, SI is Rs. 50

let be rate of interest (R) = r

We know,

(P × R × T ) / 100 = SI

(100 × R × 2 ) / 100 = 50

R × 2 = 50

R = 50/2

R = 25

so, rate of interest is 25 %