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%

In what time will ₹ 5,000 amount to ₹ 5,832 at 8% rate of compound interest p.a.?

1. 2 years

2. 4 years

3. 6 years

4. 8 years

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

A machine depreciates at the rate of 12% of its value at the beginning of a year. The machine was purchased for ₹ 10,000 and is sold for ₹ 7,744. The number of years, that the machine was used is:

1. 2

2. 4

3. 6

4. 8