Percentage

1.A man spends 30% of his income in board and lodging, 25% of the remainder in other personal necessities and 20% of the rest in charity. If his income is Rs. 25000, find the amount left by him at the end. 
(a) Rs. 8500
(b) Rs. 9500
(c) Rs. 10500
(d) Rs. 10000

2.A man spends 15% of his income in board and lodging, 10% of the remainder in other personal necessities and 5% of the rest in charity. If his income is Rs. 20000, find the amount left by him at the end. 
(a) Rs. 14535
(b) Rs. 14353
(c)Rs. 14533
(d) Rs. 15435

3.A man deposited 30% of the initial amount to his locker. And again after some time he deposited 25% of the increased amount. Now the amount becomes Rs. 13,000. How much was the initial amount? 
(a) Rs. 8000
(b) Rs. 10000
(c)Rs. 12000
(d) Rs. 9000

4.A man deposited 40% of the initial amount to his locker. And again after some time he deposited 35% of the increased amount. Now the amount becomes Rs. 18,900. How much was the initial amount? 
(a) Rs. 12000
(b) Rs. 10500
(c) Rs. 11000
(d) Rs. 10000

5. A man had Rs. 4800 in his locker two years ago. In the first year, he deposited 20% of the amount in his locker. In the second year, he deposited 25% of the increased amount in his locker. Find the amount at present in his locker. 
(a) Rs. 7200
(b) Rs. 7400
(c) Rs. 7000
(d) Rs. 8200

6.If the annual increase in the population of a town is 4% and the present number of people is 15,625, what will the population be in 3 years? 
(a) 16576
(b) 15870
(c) 17576
(d) 14000

7.During one year, the population of a locality increases by 5% but during the next year, it decreases by 5%. If the population at the end of the second year was 7980, find the population at the beginning of the first year.
(a) 7500
(b) 8000
(c) 9500
(d) 6500

8.The population of a town is 8000. If the males increase by 6% and the females by 10%, the population will be 8600. Find the number of females in the town. 
(a) 5000
(b) 2000
(c) 3000
(d) 1500

9.The population of a town is 6000. If the males increase by 5% and the females by 9%, the population will be 6500. Find the number of males in the town. 
(a) 5000
(b) 3000
(c) 4000
(d) 1000

10.If the price of a commodity be raised by 20%, find by how much per cent must a householder reduce his consumption of that commodity so as not to increase his expenditure.