NIFT UG 2020 Question Paper with solutions

Question : 8 of 150

Marks: +1, -0

If 90 men can do a certain job in 16 days, working

12 {h}

per day, then the part of that work which can be complete by 70 men in 24 days, working 8 h per day is

Solution:

Let

W=

Work done by 90 men

W_{1}=

Work done by 70 men
According to the question,

\;{W}/{90 × 16 × 12}=\;{W_{1}}/{70 × 24 × 8}

∴ \;{W}/{90}=\;{W_{1}}/{70} ⇒ W_{1}=\;{7}/{9} W

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