RRB Junior Engineer Stage 1 Model Papers 3

Question : 7 of 100

Marks: +1, -0

Seventy-five men are employed to lay down a railway line in 3 months. Due to certain emergency conditions , the work was to be finished in 18 days. How man more men should be employed to complete the work in the desired time ?

Validate

Solution:

More the no. of men less time they take to complete work.
Let x men are added

75/{75+x}=18/90

(Inverse Proportion)

75/{75+x}=1/5

375-75=x

x=300

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