SOLUTION: One day Larry decided to go fishing in the back country. He rode his bike 14 miles and then walked the last 5 miles. If it took him 3 hours all together and his bike speed was tw
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Question 984394: One day Larry decided to go fishing in the back country. He rode his bike 14 miles and then walked the last 5 miles. If it took him 3 hours all together and his bike speed was twice his walking speed, how fast did he walk in miles per hour?
The answer given is 4 mph. How do you get this? Thanks Answer by solver91311(24713) (Show Source):
Let represent the walking speed. Then represents the bicycling speed. The time he spent walking is the distance walked divided by the walking speed, or . Similarly, the time spent bicycling is , which reduces to . The sum of these two times is 3 hours, so:
Solve for
John
My calculator said it, I believe it, that settles it
