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1. The present worth of a sum due sometime hence is Rs. 576 and the banker's gain is Rs. 16. The true discount is:

A. Rs. 36

B. Rs. 72

C. Rs. 48

D. Rs. 96

Solution:

\begin{aligned} T . D . = \sqrt{P . W . \times B . G .} \\ = \sqrt{576 \times 16} \\ = 96 \end{aligned}

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