Arithmetic Ability
Compound Interest

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Q.

The compound interest on a certain sum for 2 years at 10% per annum is Rs. 1155. The simple interest on the same sum for double the time at half the rate percent per annum is ?

View Answer

Correct choice: A

Explanation:

Let the sum be Rs.x. Then, [x(1+10/100)2−x]=1155 ⇒x[(11/10)2−1]=1155 => x =5500 sum = Rs. 5500. So, S.I = Rs. (5500×5×4/100) = 1100
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