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The true discount on a certain sum of money due after 21/2 years at 6% per annum is less than the simple interest on the same sum for the same time by Rs. 81. Find the sum?
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- Rs. 4140
- Rs. 4240
- Rs. 4150
- Rs. 4250
Correct Option: A
Req. amount = [81 x (100 + 6 x 5/2) x 100] / [(6 x 5/2)2]
= (8100 x 115) / 225
= Rs. 4140
Here, S.I. - T.D. = Rs. 81
