Question

3. The simple interest on a certain sum for 2 years
at 10% per annum is Rs.40. The compound inter-
est on the same sum for the same period is​

Answer 1

Step-by-step explanation:

Principal = ?

Rate = 10

Time = 2

S.I. = PRT/100 = 40

P × 10 × 2 / 100 = 40

P = 200

Principal = Rs. 200

Now,

Amount = 200(1 + 10/100)^2 = 200 × 11/10 × 11/10 = 242

C.I. = 242 - 200 = Rs. 42

Answer 2

Answer:

288

Step-by-step explanation:

IN SIMPLE INTREST

SI =40

P=200

SO,

IN COMPOUND INTEREST

IN ONE YEAR

AMOUNT=240

IN TWO YEAR

AMOUNT=288