The present worth of a certain bill due sometime hence is Rs. 1296 and the true discount is Rs. 72. What is the bankers discount?
Rs. 76
Rs. 72
Rs. 74
Rs. 4
Explanation:
$BG = \dfrac{{TD}^2 }{PW} = \dfrac{{72}^2}{1296}$
= $\dfrac{72 \times 72}{1296} = \dfrac{12 \times 12}{36} = \dfrac{12}{3} =Rs.4$
BG = BD - TD
=> 4 = BD - 72
=> BD = 72 + 4 = Rs. 76