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


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