Friends 81769

Four guys would finish washing cars at a gas station in 4 hours. After one hour, two more friends come to help them. How long will it take to finish the car wash?

Correct answer:

x =  3 h

Step-by-step explanation:

4 4=4 1+(4+2) (x1)  6x=18  x=618=3  x=3=3 h



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