Life Mathematics

The number of conversion periods, if the interest on a principal is compounded every two months is_
1. 2
2. 4
3. 6
4. 12
The time taken for ₹4400 to become ₹4851 at 10% , compounded half yearly is
1. 6 months
2. 1 year
3. 1.5 years
4. 2 years
The cost of a machine is ₹18000 and it depreciates at 16 2/3 % annually. Its value after 2 years will be_
1. Rs.12000
2. Rs.12500
3. Rs.15000
4. Rs.16500
The sum which amounts to ₹2662 at 10% p.a in 3 years compounded yearly is__
1. Rs.2000
2. Rs.1800
3. Rs.1500
4. Rs.2500
The difference between simple and compound interest on a certain sum of money for 2 years at 2% p.a is ₹1. The sum of money is
1. Rs.2000
2. Rs.1500
3. Rs.3000
4. Rs.2500
The compound interest on ₹5000 at 12% p.a for 2 years compounded annually is
1. Rs.1272
2. Rs.1400
3. Rs.1500
4. Rs.1398
The compound interest on ₹8000 at 10% p.a for 1 year, compounded half yearly is _
1. Rs.820
2. Rs.1000
3. Rs.900
4. Rs.700
The annual rate of growth in population of a town is 10% . If its present population is 26620, the population 3 years ago was_
1. 2000
2. 20,000
3. 30,000
4. 40,000
The present value of a machine is ₹16800. It depreciates at 25% p.a. Its worth after 2 years is _
1. Rs.9450
2. Rs.2340
3. Rs.5400
4. Rs.3500
The difference between the S.I and C.I for 2 years for a principal of ₹5000 at the rate of interest 8% p.a is _
1. Rs.43
2. Rs.52
3. Rs.62
4. Rs.32