Question : The population of a town increases at the rate of 20% per annum. If the town's population will be 69,120 after 2 years, then what is the town's present population?

Option 1: 48,000

Option 2: 42,000

Option 3: 40,000

Option 4: 36,000

Question : The population of a village decreases at the rate of 40% per annum. If its population 2 years ago was 15,000, then find the present population.

Option 1: 5400

Option 2: 3500

Option 3: 4450

Option 4: 4400

Question : At what rate of compound interest (compounding annually) per annum will a sum of Rs. 250000 becomes Rs. 275625 in 2 years?

Option 1: 8% per annum

Option 2: 3% per annum

Option 3: 10% per annum

Option 4: 5% per annum

Question : Rachit invests Rs. 12,000 for a 2-year period at a certain rate of simple interest per annum. Prasad invests Rs. 12,000 for a 2-year period at the same rate of interest per annum as Rachit, but in Prasad's case, the interest is compounded annually. Find the rate of interest per annum if Prasad receives Rs. 172.80 more as interest than Rachit at the end of the 2-year period.

Option 1: 10%

Option 2: 8%

Option 3: 12%

Option 4: 5%

Question : The current population of the town is 68,000. The population increases by 10 percent in the first year and decreases by 30% in the second year. Find the population after 2 years.

Option 1: 52,360

Option 2: 68,500

Option 3: 69,000

Option 4: 70,100