GATE Mechanical Engineering (ME) 2018 Shift 2 Solved Paper

Question : 10 of 65

Marks: +1, -0

A contract is to be completed in 52 days and 125 identical robots were employed, each operational for 7 hours a day. After 39 days, five-seventh of the work was completed. How many additional robots would be required to complete the work on time, if each robot is now operational for 8 hours a day?

50
89
146
175
None of the above

Validate

Solution:

125 × 7(39)=\;{5}/{7} W

W=47775

Robot hrs.
Left work

=47775-125 × 7 × 39

=13650

Robot hrs.

13 × x × 8=13650

x=131.25

Additional robots required

=131.25-125=6.25 ≈ 7

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