1. 

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:

A. 3 months
B. 4 months
C. 6 months
D. 8 months

2. 

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

A. Rs. 400
B. Rs. 360
C. Rs. 480
D. Rs. 320

3. 

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

A. Rs. 960
B. Rs. 840
C. Rs. 1020
D. Rs. 760

4. 

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

A. Rs. 480
B. Rs. 520
C. Rs. 600
D. Rs. 960

5. 

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

A. 10%
B. 13%
C. 12%
D. 15%