SOLUTION: Emily put on her jogging shoes and trotted to the park at 6 miles per hour. Then she raced back at 10 miles per hour. If the total trip took 4 4/5 hrs, how far was it to the park?
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Question 449653: Emily put on her jogging shoes and trotted to the park at 6 miles per hour. Then she raced back at 10 miles per hour. If the total trip took 4 4/5 hrs, how far was it to the park? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! the park at 6 miles per hour.
Then she raced back at 10 miles per hour.
If the total trip took 4 4/5 hrs, how far was it to the park?
:
Let d = dist to the park
:
Change 4 to 4.8 hrs
:
Write a time equation: time = dist/speed
:
To time + return time = 4.8 hr
: + = 4.8
multiply by 30, results
5d + 3d = 30(4.8)
8d = 144
d =
d = 18 mi to the park
:
:
See if the times add up:
18/6 + 18/10 =
3 + 1.8 = 4.8 hrs
