Subject

Quantitative Aptitude

Class

SSCCGL Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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71.

From the top of a 20 m high building, the angle of elevation of the top of a tower is 60° and the angle of depression of it's foot is at 45°, then the height of the tower is open parentheses square root of 3 space equals space 1.732 close parentheses

  • 45.46 m

  • 45.64 m

  • 54.64 m

  • 54.46 m


C.

54.64 m



In ΔBDE,
    tan space 45 degree space equals space BD over DE
space space 1 space equals space 20 over DE
DE space equals space 20 space straight m
DE = BC = 20 m

In ΔABC,
tan space 60 degree space equals space AC over BC
square root of 3 space equals space AC over 20
AC space equals space 20 square root of 3 space equals space 20 space cross times space 1.73
AC space equals space 34.64 space straight m

∴  Height of the tower = AC + CE = 20 + 34.64 = 54.64 m


 

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72.

Study the pie-chart and answer the questions. The pie-chart given below shows the expenditure incurred in bringing out a book by a publisher.

What is the central angle showing the cost of paper?

  • 16°

  • 32°

  • 38.9°

  • 57.6°

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73.

Study the pie-chart and answer the questions. The pie-chart given below shows the expenditure incurred in bringing out a book by a publisher.

If the cost of printing is â‚¹ 16,800/-, the royalty is

  • ₹ 2,400

  • ₹ 3,200

  • ₹ 4,800

  • ₹ 8,400

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74.

Study the pie-chart and answer the questions. The pie-chart given below shows the expenditure incurred in bringing out a book by a publisher.

Royalty on the book is less than canvassing expenditure by

  • 25%

  • 50%

  • 24%

  • 12%

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75.

Study the pie-chart and answer the questions. The pie-chart given below shows the expenditure incurred in bringing out a book by a publisher.

If miscellaneous expenditure amount to â‚¹ 12,000/-, the expenditure on canvassing will be

  • ₹ 80,000/-

  • ₹ 1,44,000/-

  • ₹ 4,68,000/-

  • ₹ 4,05,000/-

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