Question

A some of money is lent at simple interest which amounts to ₹ 3192
in 3 years and to ₹ 3720 in 5 years. Find the sum of money and the rate of interest.​

Answer 1

Answer:

fistly 3192 ko ham multiplz kare ge 3years se fir jo ansker ya usko 5 se kardege and intrest aa jayega

Answer 2

let sum is p and rate is r

SI = 4745-p in 3 years --------(1)

Subtracting (2) to (1) ------------(2)

SI = 730 in 2 years

Hence 1 year SI = 365 Rs

Hence 3 years SI = 3× 365 = 1095 Rs

1095 = 4745 -p

p = 4745 - 1095 = 3659 Rs

Hence Sum = 3650 Rs

Now,

SI = P× r × t /100

1095 = 3650 × r × 3/100

R = 10 %