RRB Assistant Loco Pilot and Technician Model Paper 5 with solutions

Question : 7 of 100

Marks: +1, -0

A contractor undertakes to built a walls in 50 days. He employs 50 peoples for the same. However after 25 days he finds that only 40% of the work is complete. How many more man need to be employed to complete the work in time?

Validate

Solution:

(a) 50 men complete 0.4 work in 25 days.
Applying the work rule,

{ m } _ { 1 }× { d } _ { 1 } × { w } _ { 2 } = { m } _ { 2 } × { d } _ { 2 } × { w } _ { 1 }

we have,
50 × 25 × 0.6 =

m_2

× 25 × 0.4
or,

{ m } _ { 2 } = { 50 × 25× 0.6 }/ { 25 × 0.4 }

= 75 men
Number of additional men required = (75 – 50) = 25

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