Question

The banker's discount on Rs. 1600 at 15% per annum is the same as true discount on Rs. 1680 for the same time and at the same rate. The time is:

Answer 1

S.I. on Rs. 1600 = T.D. on Rs. 1680.

Rs. 1600 is the P.W. of Rs. 1680, so, Rs. 80 is on Rs. 1600 at 15%.

Time = 100 x 80/ 1600 x 15 year = 1/3 year = 4 months. ans..

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