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?

Answer 1

no.of days 210 men will take to finish remaining work=60-12=48
no.of days 280 men will take to finish the work=48*210÷280
=36days

Answer 2

Answer: The remaining work will be done in 36 days.

Step-by-step explanation:

Since we have given that

Number of men = 210

Number of days = 60

After 12 days,

Difference of days = 60-12 = 48

Number of more men = 70

We will use "Time and work":

$210M\times 48=280M\times x\\\\3M\times 48=4M\times x\\\\3\times 12=x\\\\36=x$

Hence, the remaining work will be done in 36 days.