41.
The true discount on a bill for Rs. 2520 due 6 months hence at 10% per annum is

42.
The true discount on a certain sum due 6 months hence at 15% is Rs. 240. What is the banker's discount on the same sum for the same time at the same rate?

43.
The present worth of a certain sum due sometime hence is Rs. 3400 and the true discount is Rs. 340. The banker's gain is:

44.
The banker's discount on a sum of money for $$1\frac{1}{2}$$ years is Rs. 120. The true discount on the same sum for 2 years is Rs. 150. What is the rate per cent?

45.
The present worth of a certain bill due sometime hence is Rs. 1296 and the true discount is Rs. 72. What is the banker's discount?