Question

A sum of money lent at simple interest amounts to 783 rupees in 3year and to 5475rupees in 2years .find the sum and rate per cent per annum.​

Answer 1

Answer:

Amount after 2 years =Rs.783

Amount after 3 years =Rs.837

Therefore,

S.I. of 1 year =837−783=Rs.54

⇒ S.I. of 2 years =54×2=Rs.108

Principal sum =783−108=Rs.675

Therefore,

S.I=PRt/100

54=675 ✖R✖I/100

R=54✖100/675=8 percent