Symbiosis National Aptitude Test SNAP 2012 Paper

Question : 17 of 150

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:

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}/{25×0.6}

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

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