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Question

A part of Rs. 1500 was lent at 10% p.a. and the rest at 7% p.a. simple interest. The total interest earned in three years was Rs. 396. The sum lent at 10% was

A
Rs. 900
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B
Rs. 800
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C
Rs. 700
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D
Rs. 600
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Solution

The correct option is C Rs. 900
Let the sum lent at 10% p.a. be Rs. x.
Then, the sum lent at 7% p.a. is Rs. (1500x).
Then according to the question, we have
x×10×3100+(1500x)×7×3100=396
30x100+31521x100=396
9x100=81
x=81×1009= Rs. 900
Hence sum lent at 10% p.a is Rs. 900.

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