Question

An experienced housepainter can paint an inside wall in under twenty minutes. An inexperienced housepainter can take up to one hour. If a team of an experienced painter and an inexperienced painter work on a room together, what is the longest it should take them to paint the four walls, if they finish at the same time?
1 hour

30 minutes

15 minutes

2 hours

Answer 1

How long does it take an experienced painter to paint a wall?

Answer 2

Under 20 minutes

Answer 3

Yes, so how many walls can he paint in an hour?

Answer 4

4?

Answer 5

no, 60/20=3

Answer 6

How many can an inexperienced do in an hour

Answer 7

1

Answer 8

Yes, and they have to do four walls; so if the experienced one does three walls in an hour and the inexperienced one does it in one hour how long will they be painting?

Answer 9

1 hour

Answer 10

Yep, good job.

Answer 11

Thank you. can you help me with another problem?