Question

A contractor employed 210 men to build a house in 60 days. After 12 days, he was joined by 70 more men. In how many days will the remaining work be finished?

• A. 35
• B. 36
• C. 38
• D. 40

Answer 1

Answer: (B)

36

So, $210$ men employed for $60$ days to complete work.

So, total expected work $=(210\times 60)$

So, According to the question-

$\underset{First12days}{\underset{}{(210\times 12)}}+\underset{Nextno.ofdays}{\underset{}{x}}\underset{When70moremenjoin}{\underset{}{(210+70)}}=\underset{Totalwork}{\underset{}{210\times 60}}$

$⟹2520+230x=12600$

$⟹230x=10080$

$⟹x=36$

So, $36$ more days are required.