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 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

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Another question on Mathematics

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