SSC CHSL Model Paper 5

Question : 34 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 iscomplete. How many more man need to be employed to complete the work in time?

Validate

Solution:

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

m_2={50×25×0.6}/ {25×0.4}=75

men
Number of additional men required

= (7 5 -5 0 ) = 25

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