SOLUTION: Rory walks from home to Jakes house to borrow a bicycle and then rides home along the same route. By walking at 4 mph and riding at 8 mph Rory takes 45 minutes for the entire round

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Question 1103320: Rory walks from home to Jakes house to borrow a bicycle and then rides home along the same route. By walking at 4 mph and riding at 8 mph Rory takes 45 minutes for the entire round trip. Find the distance that Rory walked
Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
             SPEED       TIME         DISTANCE
WALK          4          d%2F4             d
RIDE          8          d%2F8             d
ALL                      3%2F4

Distance walked is the same as distance bike-ridden.
d%2F4%2Bd%2F8=3%2F4
-
2d%2Bd=3%2A2 multipliedbothsidesby8
3d=3%2A2
highlight%28d=2%29

Answer by greenestamps(13214) About Me  (Show Source):
You can put this solution on YOUR website!


The walking speed is half the bicycling speed, so twice as much time is spent walking as bicycling.
The total time was 45 minutes, so 30 minutes was spent walking and 15 minutes was spent bicycling.
30 minutes (half an hour) at 4mph equals 2 miles.

He walked 2 miles.