The difference between the compound and simple interest on a certain sum deposited for 2 years at 5% p.a. is ₹ 12. The sum will be :

1. ₹ 4,500

2. ₹ 4,600

3. ₹ 4,800

4. ₹ 5,000

At what rate of compound interest p.a. will ₹ 20,000 amount to ₹ 26,620 in 3 years?

1. 4%

2. 6%

3. 8%

4. 10%

A machine depreciates at the rate of 10% of its value at the beginning of a year. If the present value of a machine is ₹ 8,000, its value after 3 years will be:

1. ₹ 5,382

2. ₹ 5,832

3. ₹ 5,238

4. ₹ 5,638

The present population of a town is 200000. The population will increase by 10% in the first year and 15% in the second year. The population of the town after two years will be:

1. 253000

2. 235000

3. 203500

4. 352000