SOLUTION: The distance from here to the beach at Little Boar's head is 10miles If you walked there at 4mph and returned jogging at *mph, how much time would the round trip take? What would

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Question 614732: The distance from here to the beach at Little Boar's head is 10miles If you walked there at 4mph and returned jogging at *mph, how much time would the round trip take? What would your overall average speed be?
Answer by ankor@dixie-net.com(15656) About Me  (Show Source):
You can put this solution on YOUR website!
Assume the problem is:
The distance from here to the beach at Little Boar's head is 10miles.
If you walked there at 4mph and returned jogging at 8mph, how much time would the round trip take?
:
Let t = time for round trip
:
Write a time equation: time = dist/speed
:
total time = walk time + jog time
t = 10%2F4 + 10%2F8
reduce fraction
t = 10%2F4 + 5%2F4
t = 15%2F4
t = 3.75 hrs
:
" What would your overall average speed be?"
Total dist = 20 mi
Speed = dist/time
S = 20%2F3.75
S = 51%2F3 mph