The Compound Interest on a certain sum for 2 years at 10% is Rs. 2100. What will be the SimpleInterest for the same period, on the same sum and at the same rate?

To solve this problem, we need to understand the difference between compound interest and simple interest.

Compound interest is calculated on the initial principal and also on the accumulated interest of previous periods of a deposit or loan. The formula for compound interest is:

A = P (1 + r/n) ^ nt

Where: A = the future value of the investment/loan, including interest P = principal investment amount (the initial deposit or loan amount) r = annual interest rate (in decimal) n = number of times that interest is compounded per year t = time the money is invested or borrowed for, in years.

Simple interest is calculated only on the initial amount (principal) that was deposited or borrowed. The formula for simple interest is:

I = P * r * t

Where: I = Interest P = principal amount (the initial amount of money) r = annual interest rate (in decimal) t = time the investment or loan is for, in years.

Given that the compound interest for 2 years at 10% is Rs. 2100, we can use the formula for compound interest to find the principal amount (P).

However, in this case, we don't need to find the principal amount. We know that the rate and time period for both the compound interest and simple interest are the same. Therefore, the simple interest will be less than or equal to the compound interest.

So, the Simple Interest for the same period, on the same sum and at the same rate will be less than or equal to Rs. 2100.