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OpenStudy (anonymous):
Daria can wash and detail 3 cars in 2 hours. Larry can wash and detail the same 3 cars in 1.5 hours. About how long will it take to wash and detail the 3 cars Daria and Larry worked together?
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OpenStudy (anonymous):
D----3/2 cars---1 hour L---3/1.5 cars---1 hour D+L-----3/2 + 3/1.3 cars ------1 hour =7/2 cars so D+L -------1 car in 2/7 hours -------3 cars --------2/7*3=6/7 hours
OpenStudy (anonymous):
ok thanks
OpenStudy (anonymous):
wels
OpenStudy (anonymous):
in the form of minutes what would that fraction be?
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