SOLUTION: Sherwin walked 20 km and returned immediately by bicycle which traveled at the rate of 30 km/hr. The entire trip required 6 hrs. What was his average rate of walking ?

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Question 992145: Sherwin walked 20 km and returned immediately by bicycle which traveled at the rate of 30 km/hr. The entire trip required 6 hrs. What was his average rate of walking ?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Average rate is [ total distance ] / [ total time ]
Average rate = +40+%2F+6+ km/hr
+20%2F3+=+6.667+ km/hr