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Mathematics 10 Online
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?

OpenStudy (anonymous):

Let T= the total time to detail cars T/2 + T/1.5 = 1 <-- solve for T

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