Question

Find the rate of interest at which an amount of Rs. 12000 will become
Rs. 15000 at the end of 10year​

Answer 1

Do principlle multiple rate multiply time and divide by 100

Answer 2

SOL.) Amount = ₹12,000

Principal = ₹15000

so, S.I. = ₹(15000-12000)

= ₹3000

Now, S.I. = P×R×T/100

₹3000 = ₹15000×R×10/100

₹3000×100/₹15000×10 = R

2% per annum = R (Answer)