RRB RPF RPSF SI and CONS Model Papers 5 with solutions

Question : 2 of 119

Marks: +1, -0

75 men working 8 hours a days can do a work in 27 days. How many days are required by 45 men working 12 hours a day to complete the work?

Solution:

(2) Let 45 men working 12 hours a day can finish the work in D

_{2}

days.
∵

{M}_{1}×{W}_{1} ×{D}_{1}= {M}_{2} ×{W}_{2} ×{D}_{2}

Then, 75 × 27 × 8 = 45 × 12 × D

_{2}

⇒ D

_{2}

= 30

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