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Robert can paint a certain wall in 4 minutes, while it takes Jack 12 minutes to paint the same wall. How long will it take Robert and Jack to paint the wall working together?

Robert can paint a certain wall in 4 minutes, while it takes Jack 12 minutes to paint the same wall. How long will it take Robert and Jack to paint the wall working together?
asked 103k views
2 votes
Robert can paint a certain wall in 4 minutes, while it takes Jack 12 minutes to paint the same wall. How long will it take Robert and Jack to paint the wall working together?

asked
User Geoff Swartz
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8.1k points

1 Answer

2 votes
it will take 24 minutes.
this is because the lowest common multiple is 24.

hope this helps you
answered
User Phil Soady
by
7.9k points
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