2519.The bankers gain on a bill due 1 year hence at 10% per annum is Rs. 20. What is the true discount?
Rs. 200
Rs. 100
Rs. 150
Rs. 250
Explanation:
$TD =\dfrac{BG \times 100}{TR}$
$= \dfrac{20 \times 100}{1 \times 10}= Rs.200$
2520.The bankers gain on a sum due 3 years hence at 12% per annum is Rs. 270. The bankers discount is:
Rs. 960
Rs. 840
Rs. 1020
Rs. 760
Explanation:
| T.D. =$ \left(\dfrac{B.G. \times 100}{R \times T} \right) $= Rs.$ \left(\dfrac{270 \times 100}{12 \times 3} \right) $= Rs. 750. |
$\therefore$ B.D. = Rs.(750 + 270) = Rs. 1020.