Question

If a certain sum of money at simple interest amounts to rs 5000 in 5 years and 5400 in 7 years at certain rate of interest per annum fin the rate of interest at which the sum is invested

Answer 1

Answer:

5000. p(1+5r)

_____= ______

5400. p(1+7r)

25. 1+5r

___= _____

27. 1+7r

25+175r=27+135r

40r=2

r=0.05 or 5%