Question

It takes 4 people 6 days to paint a wall. How many days would it take 12 people

Answer 1

Answer:

There are more than one way to do this:

Here's one way:

The least common multiple of 4 people and 3 people is 12 people.

12 people is 3 times as many people as 4 people, and

12 people is 4 times as many as 3 people.

Since 4 people take 6 days, 3 times as many people take only

one-third as long, or only 2 days. (since 2 is one-third of 6)

Since 3 people is only one-fourth as many people as 12, it will take

them 4 times as long as it would take 12 people, or 8 days. (since

4 times 2 is 8).

Step-by-step explanation:

subtract 8 from 12

4 days