Indian Institute of Foreign Trade 2017 Solved Paper

Question : 69 of 114

Marks: +1, -0

A pest control person uses a particular machine for his job, it moves along the circumference of a circular hall of radius 49 metres in 148 minutes to finish the pest control.
How many minutes more will it take him to move along the perimeter of a hexagon of side 54 metres?

7.69 minutes
14.36 minutes
14.00 minutes
4.28 minutes

Validate

Solution:

Choice (A) Speed of the pest control person

= { 2 ×{ 22 } /{ 7 } × 49 } /{ 148 } = { 77 }/ { 37 }

Time taken to move around a hexagon

= { 54 × 6 } /{ 77 / 37 } = 155.69

Extra time required = 155.69 – 148 = 7.69.

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