Question

at what rate percent will the SI on a sum of money be 2/5of p is 10 years​

Answer 1

Answer:

4%

Let the principal be 'P'

then SI=2/5 P

Time = 10 years

Rate = ?

Rate = SI * 100 / P * T

Rate = (2/5P) * 100 / P * 10

Rate = 200/50

Rate = 4%