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 Multiple Choice QuestionsMultiple Choice Questions

41.

Two numbers are respectively 12 1 half percent sign and 25% more than a third number. The first number is how much per cent of the second number?

  • 90

  • 87.5

  • 25

  • 25

175 Views

42.

Population of a town increases 2.5% annually but is decreased by 0.5% every year due to migration. What will be the percentage of increase in 2 years?

  • 5

  • 4.04

  • 4

  • 4

261 Views

43.

Krishnamurthy earns Rs. 15000 per month and spends 80% of it. Due to pay revision, his monthly income has increased by 20%, but due to price rise, he has to spend 20% more. His new savings are

  • Rs. 3400

  • Rs. 3000

  • Rs. 3600

  • Rs. 3600

282 Views

44.

72% of the students of a certain class took Biology and 44% took Mathematics. If each student took at least one of Biology or Mathematics and 40 students took both of these subjects, the total number of students in the class is

  • 200

  • 240

  • 250

  • 250

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45.

When the price of a toy was increased by 20%, the number of toys sold was decreased by 15%. What was its effect on the total sales of the shop?

  • 2% increase

  • 2% decrease

  • 4% increase

  • 4% increase

228 Views

46.

In an office, 40% of the staff is female. 70% of the female staff and 50% of the male staff are married. The percentage of the unmarried staff in the office is

  • 64

  • 60

  • 54

  • 54

332 Views

47.

Water tax is increased by 20% but its consumption is decreased by 20%. Then the increase or decrease in the expenditure of the money is

  • 5% decrease

  • 4% decrease

  • No change

  • No change

440 Views

48.

If 60% of A = 30% of B, B = 40% of C, C = x% of A, then value of x is

  • 200

  • 500

  • 800

  • 800

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49.

A businessman's earning increases by 25% in one year but decreases by 4% in the next year. Going by this pattern, after 5 years, his total earnings would be Rs. 72000. What is his present earning?

  • Rs. 10000

  • Rs. 80000

  • Rs. 40000

  • Rs. 54000

689 Views

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50.

A man spends 75% of his income. His income increases by 20% and his expenditure also increases by 10%. Find the percentage increase in his savings.

  • 25%

  • 50%

  • 15%

  • 15%


B.

50%

Let man's income be Rs. 100.
∴      Expenditure = Rs. 75
        Savings = Rs. 25
After increase:
New income =  Rs. 120
Expenditure = open parentheses fraction numerator 75 space cross times space 110 over denominator 100 end fraction close parentheses space equals space Rs space 82.5 space
Savings = Rs 120 - Rs 82.5 = Rs. 37.5
∴     Percentage increase in savings
                   equals space open parentheses fraction numerator 37.5 space minus space 25 over denominator 25 end fraction close parentheses space cross times space 100
equals space fraction numerator 12.5 over denominator 25 end fraction space cross times space 100 space equals space 50 percent sign
   
   



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