If the compound interest on a sum for 2 years at 5% per annum is Tk. 510, the simple interest on the same sum at the same rate for the same period of time is:
সমাধান
সঠিক উত্তর: Option D
we know A=P(1+r/100)n
A=principle+interest
let principle=x
we get,
x+510=x(1+12.50/100)2
x=1920
again, I=pnr
=1920×2×12.50/100
=480
