# SOLUTION: Sally drove from Town A to Town B at an average speed of 20 miles per hour. She then returned to Town A along the same road at an average speed of 30 miles per hour. What was Sally

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Sally drove from Town A to Town B at an average speed of 20 miles per hour. She then returned to Town A along the same road at an average speed of 30 miles per hour. What was Sally      Log On

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 Click here to see ALL problems on Travel Word Problems Question 353877: Sally drove from Town A to Town B at an average speed of 20 miles per hour. She then returned to Town A along the same road at an average speed of 30 miles per hour. What was Sally’s average speed, in miles per hour, for the entire trip? Found 2 solutions by ewatrrr, kintosh88:Answer by ewatrrr(11176)   (Show Source): You can put this solution on YOUR website!Hi, . Answer by kintosh88(1)   (Show Source): You can put this solution on YOUR website!Ok so with this you need to do a little algebra to get you answer. we are missing the time and distance. let just say the distance for both trip is d+d or 2d Now using the rate problem we will get the time by itself d = r.t and t= d/r so now we will find time for both trips : t = d/r + d/r t= d/20 +d/30 = 3d/60 + 2d/30 = 5d/60 = d/12 Now that we have the time lets find the average distance Average distance = distance / time = 2d / d/12 = 2d x12/d =24d/ d your answer will be 24.