Subject

Quantitative Aptitude

Class

SSCCGL Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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71.

A man standing on the bank of a river observes that the angle of elevation of the top of a tree just on the opposite bank is 60°. But the angle of elevation is 30° from a point which is at a distance of 20 square root of 3 space ft from the bank. Then the height of the tree

  • 60 ft

  • 45 ft

  • 30 ft

  • 30 ft


C.

30 ft

A man standing on the bank of a river observes that the angle of eleva
Let the height of the tree be h ft
In ΔBDC,
tan space 60 degree space equals space straight h over straight x
rightwards double arrow space space square root of 3 space equals space straight h over straight x
rightwards double arrow space space space straight x space equals space fraction numerator straight h over denominator square root of 3 end fraction space space space... left parenthesis straight i right parenthesis
 
In ABC,
tan space 30 degree space equals space fraction numerator straight h over denominator straight x plus 20 square root of 3 end fraction
rightwards double arrow space space fraction numerator 1 over denominator square root of 3 end fraction space equals space fraction numerator straight h over denominator straight x plus 20 square root of 3 end fraction
rightwards double arrow space space space straight x space plus space 20 square root of 3 space equals space straight h square root of 3
rightwards double arrow space space fraction numerator straight h over denominator square root of 3 end fraction space plus space 20 square root of 3 space equals space straight h square root of 3 space space space space left square bracket using space left parenthesis straight i right parenthesis right square bracket space
rightwards double arrow space space straight h square root of 3 minus fraction numerator straight h over denominator square root of 3 end fraction space equals space 20 square root of 3
rightwards double arrow space space 3 straight h space minus space straight h space equals space 20 square root of 3 space cross times space square root of 3
rightwards double arrow space space space space 2 straight h space equals space 60 comma space space space straight h space equals space 30 space ft



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72.

The following pie-chart shows the monthly expenditure of a man on various items. If he spends ₹ 16000 per month, answer the following questions.
            The following pie-chart shows the monthly expenditure of a man on vari

If Miscellaneous expenses be x% of the total expense, then value of x is

  • 22.5

  • 37.5

  • 36

  • 36

130 Views

73.

The following pie-chart shows the monthly expenditure of a man on various items. If he spends ₹ 16000 per month, answer the following questions.
            The following pie-chart shows the monthly expenditure of a man on vari
The ratio of expenses of food and rent is

  • 5 : 3

  • 3 : 5

  • 4 : 3

  • 4 : 3

62 Views

74.

The following pie-chart shows the monthly expenditure of a man on various items. If he spends ₹ 16000 per month, answer the following questions.
            The following pie-chart shows the monthly expenditure of a man on vari
The amount he spends on education is:

  • ₹ 1,200
  • ₹ 1,600

  • ₹ 1,800

  • ₹ 1,800

63 Views

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75.

The following pie-chart shows the monthly expenditure of a man on various items. If he spends ₹ 16000 per month, answer the following questions.
            The following pie-chart shows the monthly expenditure of a man on vari
How much more does he spend on rent as compared to education?

  • ₹ 2,400/-
  • ₹ 1,800/-
  • ₹ 3,600 /-
  • ₹ 3,600 /-
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