Problema Solution
Xavier can wash and wax one carin 4 hours. Andrei can do the same job in 6 hours. If they work together, how will it take them to wash and wax the car?
Answer provided by our tutors
Xavier'r rate is: 1/4 car per hour
Andrei's rate is: 1/6 car per hour
Let 'x' represent the time they need to wash and wax the car together.
Together rate is: 1/x car per hour
1/4 + 1/6 = 1/x
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click here to see the equation solved for x
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x = 2.4 hr
x = 2 hr 0.4*60 min
x = 2 hr 24 min
They will need to 2 hours and 24 minutes to wash and wax the cat together.