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1. If the true discount on a certain sum due 6 months hence at 15% is Rs. 120, what is the banker's discount on the same sum for the same time and at the same rate?

A. 50

B. 129

C. 100

D. 150

Solution:

\begin{aligned} B . G . = S . I . o n T . D . \\ = Rs . (120 \times 15 \times \frac{1}{2} \times \frac{1}{100}) \\ = Rs . 9 \\ B . D . - T . D . = R s . 9 \\ B . D . = Rs . (120 + 9) \\ = Rs . 129 \end{aligned}

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