Distance/Rate problem

1a2s3d4f5g6h7j8k9l

New member
Joined
Sep 14, 2011
Messages
18
Hi all,

Dana drove from A to B at a rate of 40 miles per hour. At what speed should she return so that her average speed for the round trip will be 50 miles per hour?

Please help.....Thanks!
 
Total Distance = Total Rate * Total Time

How do the distances relate to each other, trip out vs. trip in?
How do the rates relate to each other?
 
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