Math Set - 8

1. If a=9/20, b=11/15, c=3/4 then the correct inequality is

a. c>b>a  b. c>a>b
c. b>c>a  d. a>b>c

2. After losing 22.5% of his income a man has Rs.1860 left. His income is

a. Rs.2100  b. Rs.2250
c. Rs.2300  d. Rs.2400

3. The average age of 12 men is 34 years. In order that the average age of 13 men is 36 years, the age of the thirteenth man will be

a. 52  b. 54
c. 56  d. 60

4. ¼ when expressed as a percentage of 25/9 becomes

a. 7%  b. 9%
c. 11%  d. 13%

5. The smallest number which may be added to the number 8691 so as to make it a perfect square is

a. 42  b. 140  
c. 145  d. 84

6. The smallest integer by which 1575 must be divided to make the quotient a perfect square is

a. 3   b. 5
c. 7   d. 8

7. By selling goods for Rs.364, I lose 9 percent. To gain 10 percent I should sell it at

a. Rs.400  b. Rs.420
c. Rs.440  d. Rs.450

8. The fourth proportional of 3, 4, 9 is

a. 8    b. 12
c. 16    d. 18

9. The number nearest to 100000 and divisible by 2, 3, 4, 5, 6, 7 is

a. 99930  b. 99960
c. 99976  d. 99996

10. The present age of the father is three times that of his son, 8 years hence the ratio of their ages will be 11:5. The present age of the son is

a. 8 years  b. 12 years
c. 15 years  d. 16 years

11. A man sells an article at a profit of 20 percent on sales. If the cost price be Rs.960 its selling price is

a. Rs.1000  b. Rs.1100
c. Rs.1350  d. Rs.1200

12. A mixture is formed by taking 2 kg. of a powder at Rs.2 per kg., 6 kg. at Rs.3 per kg. and 8 kg. at Rs.4 per kg. The price per kg. of the mixture is

a. Rs.3.37  b. Rs.3
c. Rs.3.50  d. Rs.4

13. 0.005123 when multiplied by 5.38 is

a. 0.02756174 b. 0.2756174
c. 2.756174 d. 27.56174

14. 7.5 % of Rs.4600 is

a. Rs.342  b. Rs.345
c. Rs.347  d. Rs.349

15. A meter-measure is 1 cm. too short. The true length of cloth which apparently measures Y meters is

a. Y m.1 cm. b. Y.Y m.
c. Ym. Ycm. D. None of these

16. 5 men and 3 boys can plough 65 acres in 15 days. The number of days in which 8 men and 5 boys will plaugh 280 acres, one man being able to do twice as much as a boy is

a. 30  b. 40
c. 35  d. 25

17. A merchant buys plots at such a price that by selling it at Rs.4.50 per meter he will gain 12.5% on his outlay. His cost per meter is

a. Rs.4  b. Rs.3.5
c. Rs.3  d. Rs.4.10

18. 8897/10619 when reduced to lowest term is

a. 33/39  b. 141/147
c. 31/37  d. 1/17

19. By selling a picture for Rs.55.20, I lose 8 per cent. The buying price of the picture was

a. Rs.60  b. Rs.64
c. Rs.68  d. Rs.72

20. The number which multiplied by 37 gives the same product as 296 multiplied by 309, is

a. 2072  b. 2272
c. 2472  d. 2572

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