One student can paint a wall in 12 minutes. Another student can paint the same wall in 24 minutes. Working together, how long will it take for them to paint the wall?

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asked Aug 21, 2018 46.1k views

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Hux · Answer 1 · 2018-08-27T10:21:24+0000

Student 1 can paint 1/12 of the wall per minute.
Student 2 can paint 1/24 of the wall per minute.

1/12t+ 1/24t= 1 where t represents time in minutes.
3/24t=1

Divide both sides by 3/24
t=24/3
t=8

Final answer: 8 minutes

One student can paint a wall in 12 minutes. Another student can paint the same wall in 24 minutes. Working together, how long will it take for them to paint the wall?

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