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Al washed a car in 6 minutes. Fred washes the same car in 8 min. How long dies it take Al and Fred to wash the car together?
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Al washed a car in 6 minutes. Fred washes the same car in 8 min. How long dies it take Al and Fred to wash the car together?

User Nelson Monterroso
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1 Answer

6 votes

In\ 1min\ Al\ wash\ (1)/(6)\ car.\\In\ 1min\ Fred\ wash\ (1)/(8)\ car\\\\Together\ in\ 1min:(1)/(6)+(1)/(8)=(4)/(24)+(3)/(24)=(7)/(24)\ car\\\\Answer:Al\ and\ Fred\ wash\ the\ car\ in\ (24)/(7)min=3(3)/(7)min\approx3.5min
User Majorie
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