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Leona [35]
3 years ago
9

Dorie can paint an entire house in 12 hours, and Mercedes can paint the same house in 8 hours. How long would it take the 2 of t

hem to paint the house together?
Mathematics
2 answers:
borishaifa [10]3 years ago
7 0
It will take them 10 hours to paint the house together
Xelga [282]3 years ago
5 0
If Mercedes alone could paint the house in 8 hours, we would expect that both painting together would take less than 8 hours.
In 1 hour: Dorie would paint 1/12 of the house, while Mercedes would paint 1/8. This is a total of 1/12 + 1/8 = 5/24. If they can combine to paint 5/24 of the house in 1 hour, then the total time for the whole house would be
1 / (5/24) = 24/5 = 4.8 hours or 4 4/5 hours
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