Question

The intrest on a sum of money at the end of 5/2 years is 4/5 of the sum . What is the rate percent?​

Answer 1

Let the sum be rs 100

SI= 4/5 of the sum

SI= 4/5×100=rs 80

Time= 21/2

Rate= SI×100/P×T

Rate= 80×100/100×21/2=160/21 % pa convert into whole