It takes 63 minutes for 4 people to paint 9 walls. How many minutes does it take 7 people to paint 4 walls?
Hello Guest!
We can use unit rates for the problem.
63 minutes: 4 people: 9 walls
63*4 mins: 1 person: 9 walls
63*4/9 mins: 1 person: 1 wall
28 mins: 1 person: 1 wall.
This is the unit rate.
Then it takes 7 people 4 minutes to paint 1 wall.
For 4 walls, 4*4= 16 minutes for 7 people to paint 4 walls.
I hope this helps Guest.
+23245 If 4 people work 63 minutes each, they have worked a total of 4 x 63 = 252 minutes.
They got 9 walls painted, so each wall took 252 / 9 = 28 minutes.
If you have 4 walls, it will take 4 x 28 = 112 minutes.
You have 7 people, so each person will paint for 112 / 7 = 16 minutes.
