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OpenStudy (anonymous):
Max can wash and wax a car in 60 min. His older sister Kayla can do the same job in 45 min. How long will the car take them if they work together?
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OpenStudy (anonymous):
any idea ?
OpenStudy (anonymous):
52.5?
OpenStudy (anonymous):
Max in 60 min. Kayla in 45 min how you got this result ?
OpenStudy (anonymous):
(60+45)/2 = ?
OpenStudy (anonymous):
= 52,5 you are right sure
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OpenStudy (anonymous):
nice good luck bye bye
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