Percentage

1. The length and breadth of a rectangle are changed by +20% and by -10% respectively. What is the percentage change in the area of the rectangle?

(a) 4% decrease (b) 4 % increase (c) 8 % decrease (d) 8% increase



2. The value of a machine depreciates at the rate of 10% per annum. If its present value is

Rs.162000, then what will be its value after two years? What was the value of the machine two years ago?

(a) Rs.131220, Rs.200000 (b) Rs.129600, Rs.194400

(c) Rs.194400, Rs.129600 (d) None of these



3. A man spent 20% of his monthly income on house rent. Out of the remaining, he

spent 70% on food. If he had balance of Rs.250 at month end, the monthly income of the man is approximately:

(a) 1042 rupees (b) 2000 rupees (c) 1800 rupees (d) 900 rupees



4. A woman has a certain number of apples, of which 13% are bad. She gives 75% of the remainder to charity, and then has 261 left. How many did she have initially?

(a) 1300 (b) 1200 (c) 1250 (d) 610



5. In an election between 2 candidates, Bhiku gets 65% of the total valid votes. If the total number of votes is 12000, what is the number of votes that the other candidate Sourabh gets if 25% of the total votes polled were declared invalid?

(a) 3000 (b) 4150 (c) 5150 (d) 3150



6. 80 litres of milk and water contains 5% water in it. How much more water must be added to the mixture to make it 25% in the resulting mixture?

(a) 10 litres (b) 21.33 litres (c) 20 litres (d) 25 litres



7. A’s salary is 20% lower than B’s salary which is 25% lower than C’s salary. By what percent is C’s salary more than A’s salary?

(a) 60% (b)65% (c)66.67% (d)70%



8. The population of a village is 5500. If the number of male members increases by 10% and the number of female members increases by 20%, the population becomes 6500. Find the population of female members in the town.

(a) 2000 (b) 1500 (c) 2500 (d) 4500



9. A water melon weighs 5000gms. 99% of its weight is water. It is kept in a drying room and after some time it turns out that only 98% of its weight is water. What is its weight now?

(a) 4500 (b) 2500 (c) 4950 (d) none



10. In an examination 65% of the students passed in Science, 68% passed in Mathematics and 25% failed in both. Find the pass percentage?

(a) 55% (b) 58% (c) 60% (d)75%



11. In a class of 52 students, 25% are rich and the others are poor. There are 20 female members in the class, of whom 55% are poor. How many rich male members are there in the class?

(a) 4 (b) 8 (c) 5 (d) 6



12. Pouring ‘p’ litres of oil into a tank leaves it e% empty. Find the full capacity of the tank in litres. How much more oil will fill it to the brim?

(a) pe litres (b) 100 pe litres (c) (pe/100-e) litres (d) (100e/p) litres



13. A person fails in an exam for want of 12 marks. Had he got 27 marks more he would have passed by scoring a clear 50% in the exam. Find the maximum marks given that the pass percentage is 40?

(a) 100 (b) 175 (c) 300 (d) 150



14. A pile of coins is to be divided amongst 6 people A,B,C,D,E,F in that order such that each gets twice the other . If A gets the least and F the highest, what is the % increase in number of coins received by (a)F over C and (b)E over B?



(a) 700%, 700% (b) 600%, 500% (c) 400%, 300% (d) 500%, 400%



15. Anindo’s project report consists of 25 pages each of 60 lines with 75 characters on each line. In case, the number of lines is reduced to 50, but the number of characters is increased to 100 per line, what is the percentage change in the number of pages?

(a) 10% decrease (b) 12% decrease (c) 20% increase (d) 5% decrease