Homework Help: math

Posted by Stella on Sunday, October 26, 2008 at 11:30am.

This is an SAT prep question. A woman drove to work at an average speed of 40 miles per hour and returned along the same route at 30 miles per hour. If her total traveling time was 1 hour, what was the total number of miles in the round trip?

math - Tatiana, Sunday, October 26, 2008 at 11:55am
how do you draw a oblique discrete line
math - Reiny, Sunday, October 26, 2008 at 12:01pm
clearly the distance(D)each way is the same

so D/40 + D/30 + 1

solve for D

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