Mathematics, 25.09.2019 07:30 Tristanana
Al can wash a car in 60 minutes, and bill can wash a car in 30 minutes. cathy can wash a car in 20 minutes. how long, in minutes, would it take the 3 of them to wash a car, working together?
a. 10
b. 36
c.
d. 110
Answers: 1
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Al can wash a car in 60 minutes, and bill can wash a car in 30 minutes. cathy can wash a car in 20 m...
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