Subject

Quantitative Aptitude

Class

SSCCGL Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

A can finish a work in 7 days. B can finish the same work in 9 days. The days required to finish the work by both of them together

  • 1 15 over 16

  • 2 15 over 16

  • 3 15 over 16

  • 4 15 over 16

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52.

If the successive discounts be 20%, 10% and 5%, then the single equivalent rate of discount is

  • 31.6%

  • 31.5%

  • 31%

  • 31.4%


A.

31.6%

Single equivalent  = open parentheses straight x space space plus space space straight y space plus space fraction numerator straight x. space straight y over denominator 100 end fraction close parentheses percent sign
Single equivalent 20% and 10%
                     equals space space 20 space plus space 10 space space minus space fraction numerator 20 space cross times space 10 over denominator 100 end fraction
equals space 30 space minus space 2 space equals space 28 percent sign
Single equivalent 28% and 5%
                  equals space 28 space plus space 5 space minus space fraction numerator 28 space cross times space 5 over denominator 100 end fraction
space equals space 33 space minus space 1.4
equals space 31.6 percent sign
                    

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53.

The ratio of number of boys and girls in a school of 720 students is 7 : 5. How many girl should be admitted to make the ratio 1 : 1.

  • 90%

  • 120%

  • 220%

  • 240%

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54.

The selling price of 6 bananas is equal to the cost price of 8 bananas. Then the percentage of profit is

  • 20%

  • 33 1 third percent sign

  • 25%

  • 30%

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55.

A basket contains 300 mangoes. 75 mangoes were distributed among some students. Find the percentage of mangoes left in the basket.

  • 70%

  • 72%

  • 76%

  • 75%

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56.

A man goes to a place on bicycle at speed of 16 km/hr, and comes back at lower speed. If the average speed is 6.4 km/hr in total, then the return speed (in  km/hr) is

  • 10

  • 8

  • 6

  • 4

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57.

The simple interest on a certain sum of money at the rate of 5% per annum for 8 years is â‚¹ 840/-. Rate of interest for which the same amount of interest can be received on the same sum after 5 years is

  • 7%

  • 8%

  • 9%

  • 10%

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58.

If straight c space plus space 1 over straight c space equals space 3 comma then the value of left parenthesis straight c minus 3 right parenthesis to the power of 7 space plus space 1 over straight c to the power of 7 is

  • 2

  • 0

  • 3

  • 1

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59.

If 2 straight x space plus space fraction numerator 1 over denominator 4 straight x end fraction space equals space 1 comma then straight x squared space plus space fraction numerator 1 over denominator 64 straight x squared end fraction is

  • 0

  • 1

  • 1 fourth

  • 2

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60.

O is the ortho-centre of Δ ABC, and if ∠BOC = 110°, then ∠BAC will be

  • 110°

  • 70°

  • 100°

  • 90°

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