What is the annual interest rate on an account that earns Tk. 948 in simple interest over 36 months with an initial deposit of Tk. 7900?

A 40%

B 4%

C 3%

D 3.3%

Solution

Correct Answer: Option B

এখানে P=7900 টাকা
I= 948 টাকা
n=36 মাস
   =3 বছর

আমরা জানি ,
I =Pnr/100
r=(I  ×100)/P ×n
   =(948 ×100)/7900 ×3=4

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