Showing Mcqs of math -- (543)

. A number is increased by 20% and then decreased by 20%, final value of the number 

Does not change

Decrease by 2%

increase by 4%

Decrease by 4%

The population of a town is decreased by 20% and 25% in two successive years. What per cent population is decreased after two years?

50%

40%

30%

60%

 The radius of a sphere is increased by 10%. The surface area increases by

21%

31%

41%

51%

 The income of a company increases 20% per annum. If i's income is Rs. 26,64,000 in the year 1999 what was its income in the year 1997? 

17,75,000

16,50,000

18,50,000

19,80,000

. The population of a town is 32000. It increases 15% annually. What will it be in 2 years? 

52340

42320

62430

none of these

The daily wage is increased by 25% and a person now gets Rs per day. What was his daily wage before the increase? 

25

20

30

none of these

 A student has to secure 15% marks to get through. If he get marks and fails by 70 marks, find the maximum marks set for the examination. 

900

1000

1200

1300

 One side of a square is increased by 30%. To maintain the sun area the other side will have to be decreased by

23 1/2%

76 12/13%

30%

15%

 Take p to be six times as large as q. The per cent that q is less the p is 

60

90

16 2/3

83 1/3

If 70% of students in a school are boys and the number of girls is 504, the number of boys is: 

1680

1176

1276

none of these