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1. The present worth of a certain bill due sometime hence is Rs. 800 and the true discount is Rs. 36. The banker's discount is:

A. Rs. 37

B. Rs. 37.62

C. Rs. 34.38

D. Rs. 38.98

Solution:

\begin{aligned} B . G . = \frac{{(T . D .)}^{2}}{P . W .} \\ = R s . (\frac{36 \times 36}{800}) \\ = R s . 1.62 \\ ∴ B . D . = (T . D . + B . G .) \\ = R s . (36 + 1.62) \\ = R s . 37.62 \end{aligned}

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