It takes 21 minutes for 5 people to paint 7 walls. How many minutes does it take 3 people to paint 5 walls?
Answers
Answered by
11
Answer:
The correct answer is 25 minutes.
Step-by-step explanation:
First calculate how long it will take one person to paint one wall:
The time taken for a single person to paint a wall is 1/7 of the time, so it will take 3 minutes for 5 people to paint a wall.
For only one person, it will take 5 times as long, so it will take 3 times 5 = 15 minutes for one person to paint one wall.
So, the number of minutes it will take for one person to paint 5 walls is 15 times 5 = 75.
A single person will take 75 minutes to paint a wall, but since we are calculating three people, we take 75 divided by 3 and get 25.
Hence, 3 people will take 25 minutes to paint 5 walls.
Answered by
2
Answer:
25
Step-by-step explanation:
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