A painter estimates she can paint a house in 40 hours. She knows her assistant can do the same job is 60 hours. How long would i
t take them to paint the house working together?
1 answer:
24 hours
Step-by-step explanation:
1 hour
Painter1 1/40
Painter2 1/60
together 1/40+1/60=5/120=1/24
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