Question

the difference between the Compound interest and simple interest on a certain sum for 3 years is rs.750 at the rate of 12*1/2 %. Find the sum

Answer 1

12.5%=1/8 then

a = 8unit

shortcut ,... difference of CI and SI for 3 year is (3a+1)unit which is 750

(3×8+1)unit =750

1unit =30

and sum will be a³

(8)³ 512unit .= 512×30=15360 ans....

its shortcut method. get it or not ?? otherwise i will explain it in detail