Question

A man can paint one house in 12 hours. At this rate, how many houses could 18 men paint in 6 hours? A) 3 houses B) 6 houses C) 9 houses D)

Answer 1

Answer:

The correct option is C. 9 houses could 18 men paint in 6 hours.

Step by step explanation:

Let the number of houses paint by 18 men in 6 hours be x.

One man can paint one house in 12 hours.

The part of house painted by a man in 1 hour is $\frac{1}{12}$.

The part of house painted by a man in 6 hour is

$\frac{6}{12}=\frac{1}{2}$

The total number of men is 18. Therefore the number of houses painted by 18 men is

$x=\frac{1}{2}\times 18=9$

Therefore correct option is C. 9 houses could 18 men paint in 6 hours.