Math Set - 16

1. A trade marks his goods 25% above cost price, but allows a discount of 8% to his customer. His profit per cent is

a. 12.5  b. 15
c. 12    d. 17

2. A number is first increased by 10% and then decreased by 10%. The percentage change in the number is

a. Nil  b. increased by 1%
c. decreased by 1%
d. increased by 1.5%

3. A man spends in 4 months as much as he earns in 3 months. His annual savings is Rs.1,200. His annual earning is

a. Rs.4800  b. Rs.4428
c. Rs.4842  d. Rs.4284

4. The least number which divides 7623 to make it a perfect square is

a. 6   b. 7
c. 9   d. 3

5. Half the sum of two numbers is 20 and 3 times their difference is 18. The product of the two numbers is

a. 391  b. 319
c. 193  d. 360

6. 855/1881 reduced to its lowest terms is

a. 5/21  b. 11/12
c. 5/12  d. 5/11

7. The product and quotient of two numbers are 100 and 4 respectively. The sum of two numbers is

a. 21  b. 25
c. 20  d. 24

8. The least number subtracted from 293 to make the result a perfect square, is

a. 4   b. 1
c. 3   d. 2

9. A man paid 7.5% of his income in General Provident Fund and 13.5% to Insurance Premiums. For Insurance premiums he paid Rs.270. His total payment was

a. Rs.400  b. Rs.420
c. Rs.500  d. Rs.650

10. One train travels 448 km. in 8 hours and a second train travels 504 km. in 12 hours. The ratio of their average speed in km. per hour is

a. 3:4  b. 2:3
c. 4:1  d. 4:3

11. From a place a ship went 12 km. straight towards south and then moved 5 km. straight towards east. The distance of the ship now, as seen from the starting place, is

a. 17 km.  b. 13 km.
c. 7 km.   d. 10 km.

12. The number of days constituting the first four months of the year 1900 A.D. was

a. 119  b. 120
c. 121  d. 122

13. The number of prime numbers between 70 and 90 is

a. 7   b. 6
c. 5   d. 8

14. The least integer added to 89 multiplied by 95 to make in a perfect square is

a. 8   b. 9
c. 6   d. 7

15. Three numbers are in the ratio of 3:4:6 and their H.C.F. is 12. The L.C.M. of the three numbers is

a. 72   b. 96
c. 192  d. 144

16. If the cost of fencing a square field at Rs.5.50 per meter is Rs.220, the cost of paving of the field at Rs.7 per square meter, is

a. Rs.400  b. Rs.800
c. Rs.700  d. Rs.640

17. The smallest number which when divided by 20, 42 or 63 leaves a remainder 11 in each case is

a. 1260  b. 1271
c. 1270  d. 1259

18. A container full of water weights 28 kg. When halfful it weights 18 kg. The weight of the container is

a. 18 kg.  b. 20 kg.
c. 8 kg.   d. 12 kg.

19. 12% of the cattle of a village died in a flood and 5% of the remainder died subsequently of malnutrition. If 8,360 cattle survive, the number of cattle the village originally had, was

a. 7500   b. 10,000
c. 5,000  d. 12,000

20. 82*081 is divided by 11. The * marked digit is

a. 3   b. 5
c. 2   d. 9

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