1.
The banker's discount on a bill due 4 months hence at 15% is Rs. 420. The true discount is:

2.
The banker's discount on Rs. 1600 at 15% per annum is the same as true discount on Rs. 1680 for the same time and at the same rate. The time is:

3.
The banker's gain of a certain sum due 2 years hence at 10% per annum is Rs. 24. The present worth is:

4.
The banker's discount on a sum of money for $$1\frac{1}{2}$$ years is Rs. 558 and the true discount on the same sum for 2 years is Rs. 600. The rate percent is:

5.
The banker's gain on a sum due 3 years hence at 12% per annum is Rs. 270. The banker's discount is:

6.
The banker's discount of a certain sum of money is Rs. 72 and the true discount on the same sum for the same time is Rs. 60. The sum due is:

7.
The certain worth of a certain sum due sometime hence is Rs. 1600 and the true discount is Rs. 160. The banker's gain is:

8.
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:

9.
The banker's gain on a bill due 1 year hence at 12% per annum is Rs. 6. The true discount is:

10.
The banker's gain on a certain sum due $$1\frac{1}{2}$$ years hence is $$\frac{3}{{25}}$$ of the banker's discount. The rate percent is: