Math Set - 3

1. A car travels 120 meters in 6 seconds. The rate in kilometers per hour is-

a. 60		b. 72		
c. 100		d. 82

2. The number 24*83 is divisible by 11. The * marked digit is

a. 8			b. 4
c. 7			d. 6

3. 8^th January, 1988 was Friday. 9^th September, 1988 was

a. Thursday	b. Friday
c. Sunday		d. Tuesday

4. If the length of a rectangular plot is increased by 5% and the breadth is decreased by 10% then its area is

a. decreased by 5.5%
b. decreased by 9.45%
c. increased by 5.5%
d. increased by 9.45%

5. In a division, a student took 23 as devisor instead of 32. His answer was 64. The correct answer is

a. 36		b. 46
c. 50		d. 56

6. If 16 out of 40 students fail, the percentage of pass is

a. 40		b. 60
c. 25		d. None of these

7. The largest number which has to be subtracted from 390 to make the remainder divisible by 2, 4, 5, 6 is

a. 360		b. 330
c. 270		d. 300

8. . 2 men and 3 boys can finish a work in 6 days, but 3 men and 2 boys can finish the same work in 4 days. A man and a boy can finish the work in

a. 10 days		b. 12 days
c. 14 days		d. 18 days

9. A buys a pen at Rs.15 and sells it to B at a profit of 20% and B sells it at a loss of 10%. The loss of B is

a. Rs.1.80		b. Rs.1.50
c. Rs.3.00		d. Rs.2.50

10. A dealer allows 10% discount on the list price of an article and yet makes a profit of 25% on the article. If the listed price is Rs.50, then the cost price of the dealer on that article was

a. Rs.25		b. Rs.30
c. Rs.36		d. rs.40

11. If a quantity of rice serve 100 men for 15 weeks, the same quantity will serve 250 men for

a. 6 weeks	b. 10 weeks
c. 15 weeks	d. 37.5 weeks

12. A and B can do a piece of work in 30 days, B and C in 24 days and C and A in 20 days. If they all work together, the work will be finished in

a. 74 days		b. 37 days
c. 8 days		d. 16 days

13. If a train 150 meters long passes a telegraph post in 12 seconds, then the time in which it will pass a bridge 250 meters long is

a. 25 secs		b. 30 secs
c. 32 secs		d. 35 secs

14. Each side of a rectangular field is increased by 20%. The area of the field is increased by

a. 40%		b. 35%
c. 44%		d. 36%

15. The average of 30 boys in a class was 10 years. 4 new boys were admitted, the class average was then 9 years 6 months. The average age of 4 newly admitted boys was

a. 8 years		b. 6 years
c. 5 years 9 months
d. 7 years 6 months

16. The square of a number exceeds double the number by 360. If the number is positive, it is

a. 14		b. 18
c. 20		d. 25

17. The radius of a bicycle wheel is 84 cm. The number of times it will revolve in going through 1.056 km. is

a. 150		b. 175
c. 180		d. 200

18. A reduction of 20% in the price of flour would enable a purchaser to get 4 kg. more for Rs.100. The reduced price per kg. is then

a. Rs.4		b. Rs.5
c. Rs.8		d. Rs.10

19. I spent 20% of my money and then 25% of the remainder. I have still Rs.12 left. I had at first

a. Rs.15		b. Rs.20
c. Rs.16		d. Rs.24

20. By selling an article for Rs.60, a man gains 20%. If the same article were sold for Rs.55, there would have been

a. a gain of 5%
b. a loss of 5%
c. a loss of 10%
d. a gain of 10%

Answers: 1(b), 2(c), 3(b), 4(a), 5(b), 6(b), 7(b), 8(b), 9(a), 10(c)
11(a), 12(d), 13(c), 14(c), 15(c), 16(c), 17(d), 18(b), 19(b), 20(d).