Discussion of Question with ID = 070 under Simple-Interest

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Question

Mr. X borrowed Rs. 1100 from Mr. Y on simple interest @6% for 6 years. He then adds an amount x to it and lends it to Mr. Z @9% for the same duration. What is x if he gains Rs. 414?

A

Rs. 400.

B

Rs. 500.

C

Rs. 300.

D

Rs. 600.

Soln.
Ans: a

His gain is ${(1100 + x) × 9 × 6}/100$ - ${1100 × 6 × 6}/100$ = 414. We can solve this for x to get x = Rs. 400.


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