SOLUTION: A jogger runs from her home to the shop at an average speed of 12 km/h. When she gets there she finds that the shop is closed. She walks back home at a constant speed of 4 km/h. wh
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Question 1050086: A jogger runs from her home to the shop at an average speed of 12 km/h. When she gets there she finds that the shop is closed. She walks back home at a constant speed of 4 km/h. what is the average speed?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Average speed is always:
[ total distance traveled ] / [ total time spent traveling ]
Let = one-way distance between home and shop
----------------
Time spent jogging:
hrs
Time spent walking:
hrs
----------------------
Average speed =
The average speed is 6 km/hr
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