SOLUTION: A man walks at 5km/h for 6 hours and 4 km/h for 12 hours, what is his average speed?

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Question 957203: A man walks at 5km/h for 6 hours and 4 km/h for 12 hours, what is his average speed?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the total distance he travels,
D=5%2A6%2B4%2A12=30%2B48=78
Find the total time it takes,
T=6%2B12=18
Divide to find the average speed,
S=D%2FT=78%2F18=13%2F3kph