SOLUTION: It takes 28 minutes for 3 people to paint 7 walls.
How many minutes does it take 4 people to paint 10 walls?
Algebra ->
Rate-of-work-word-problems
-> SOLUTION: It takes 28 minutes for 3 people to paint 7 walls.
How many minutes does it take 4 people to paint 10 walls?
Log On
Question 999725: It takes 28 minutes for 3 people to paint 7 walls.
How many minutes does it take 4 people to paint 10 walls? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! It takes 28 minutes for 3 people to paint 7 walls.
How many minutes does it take 4 people to paint 10 walls?
---------
28*3 = 84 people-minutes for 7 walls.
--> 12 people-minutes for 1 wall.
----
10*12 = 120 people-minutes for 10 walls.
120 people-minutes/4 people = 30 minutes
