Question

If two painters can complete two rooms in two hours, how many painters would it take to do 18 rooms in 6 hours?

Answer 1

Two painters can complete two rooms in 2 hours i.e, 4 man hours for two rooms which is 2 man hours per room.
18 rooms requires 2×18 =36 man hours.
36 man hours for 6 hours means 36/6=6 men working 6 hours to paint 18 rooms

Answer 2

Answer:

6 men

Step-by-step explanation:

We are given that two painters can complete two rooms in two hours

So, if Two painters can complete two rooms in 2 hours

So, 4 man hours = 2 rooms

⇒  2 man hours per room.

Since 1 room = 2 man hours

18 rooms = $2 \times 18$ man hours

                = $36$ man hours

So, 36 man hours for 6 hours means $\frac{36}{6}$ = 6 men

⇒6 painters are working 6 hours to paint 18 rooms.

Hence it take 6 men to paint do 18 rooms in 6 hours.