The numbers x, y, z are respectively proportional to 2 : 3 : 5 an

Subject

Quantitative Aptitude

Class

SSCCGL Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

A is twice as good as B and together they finish a piece of work in 16 days. The number of days taken by A alone to finish the work in

  • 20 days

  • 21 days

  • 22 days

  • 24 days

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52.

The successive discounts of 15%, 20% and 25% on an article is equivalent to the single discount of

  • 60%

  • 47%

  • 49%

  • 40%

90 Views

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53.

The numbers x, y, z are respectively proportional to 2 : 3 : 5 and the sum of x, y and z is 80. If the number z is given by the equation z = ax - 8, then a is

  • 6

  • 3 over 2

  • 3

  • 5 over 2


C.

3

x : y : z = 2 : 3 : 5
x + y + z = 80
straight x space equals space 80 space cross times space 2 over 10 space equals space 16
straight y space equals space 80 space cross times 3 over 10 space equals space 24
straight z space equals space 80 space cross times space 5 over 10 space equals space 40
z = ax - 8
rightwards double arrow space space 40 space equals space straight a space cross times space 16 space minus space 8
rightwards double arrow space space 16 straight a space equals space 48
rightwards double arrow space space straight a space equals space 3

 

 

 

 

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54.

If the ratio of cost price and selling price be 10 : 11, then the profit percentage is

  • 1%

  • 10%

  • 5%

  • 8%

62 Views

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55.

The price of rice has increased by 60%. In order to restore the original price, the new price must be reduced by:

  • 33 1 third percent sign

  • 37 1 half percent sign

  • 40%

  • 45%

74 Views

56.

A man covers a total distance of 100 km on bicycle. For the first 2 hours, the speed was 20 km/hr and for the rest of the journey, it came down to 10 km/hr. The average speed will be

  • 12 1 half space km divided by hr

  • 13 km/hr

  • 15 1 over 8 space km divided by hr

  • 20 km/hr

142 Views

57.

Alipta got some amount of money from her father. In how many years will the ratio of the money and the interest obtained from it be 10 : 3 at 6% simple interest per annum?

  • 7 years

  • 3 years

  • 5 years

  • 4 years

106 Views

58.

If (x - 2) (x - p) = x2 - ax + 6, then the value of (a - p) is:

  • 0

  • 1

  • 2

  • 3

78 Views

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59.

When 2 straight x plus 2 over straight x space equals space 3 comma then value of straight x cubed space plus space 1 over straight x cubed plus 2 is

  • 2 over 7

  • 7 over 8

  • 7 over 2

  • 8 over 7

54 Views

60.

In a triangle ABC, if angle straight A space space plus space angle straight C space equals space 140 degree and angle straight A space plus space 3 angle straight B space equals space 180 degree, then angle straight A is equal to

  • 80°

  • 40°

  • 60°

  • 20°

60 Views

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