Question

If a principal is getting doubled after 4 years thencalculate the rate of interest?

Answer 1

Answer:

25 % Per annum

Step-by-step explanation:

:- Let the principal be P

:- Amount =2P

:- Simple Interest ( SI ) = 2P - P

:- Time ( T ) = 4years

Let the rate of interest be R

:- Simple Interest = PRT / 100

:- P = P × R × 4 /100

Rate of Interest = 25% per annum.