Mathematics, 31.05.2021 14:10 giiiselleee05
If I can paint a wall in 20 min and my friend can paint a wall in 30 min. How many minutes would it take for us to paint a wall working together.
Answers: 1
part and 
part of wall respectively.
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If I can paint a wall in 20 min and my friend can paint a wall in 30 min. How many minutes would it...
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