RRB RPF RPSF SI and CONS Model Papers 10 with solutions

Question : 70 of 120

Marks: +1, -0

A job can be completed by 12 men in 12 days. How many extra days will be needed to complete the job if 6 men leave after working for 6 days ?

Solution:

(3) Work done by 12 men in 6 days

=1/2

Remaining work

=1-1/2=1/2

6 men leave the work.
∴ Time taken =

{12 × 12}/{6 × 2}

= 12 days

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