All members of our painting team paint at the same rate. If $15$ members can paint a specific wall in $45$ minutes, then how long would it take $20$ members to paint the same wall, in minutes?

parmen Jun 18, 2024

#1**+1 **

We can use poportions to solve this problem.

If 15 members can paint a wall in 45 minutes, then 5 members can paint a wall in \(45*3=135\) minutes.

We multiply by 3 because the less people there are, the more time it the less people there are.

Now, we multiply by 4 to get 20 members.

Thus, we must do \(135/4\)

We get that \(135/4=33.75\)

So it takes about 33 minutes and 45 seconds.

Thanks! :)

NotThatSmart Jun 18, 2024

#1**+1 **

Best Answer

We can use poportions to solve this problem.

If 15 members can paint a wall in 45 minutes, then 5 members can paint a wall in \(45*3=135\) minutes.

We multiply by 3 because the less people there are, the more time it the less people there are.

Now, we multiply by 4 to get 20 members.

Thus, we must do \(135/4\)

We get that \(135/4=33.75\)

So it takes about 33 minutes and 45 seconds.

Thanks! :)

NotThatSmart Jun 18, 2024