SOLUTION: John was on a 10 mike track, he walked at a rate of 3 mph then rode the rest on his bike at a rate of 12 mph, if it took him an hour to go around the track how long did he walk for

Question 942329: John was on a 10 mike track, he walked at a rate of 3 mph then rode the rest on his bike at a rate of 12 mph, if it took him an hour to go around the track how long did he walk for?
Walking:
Rate= 3 mph
Distance= x(unknown)
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
John was on a 10 mile track, he walked at a rate of 3 mph then rode the rest on his bike at a rate of 12 mph, if it took him an hour to go around the track how long did he walk for?
***
let x=distance John walked
10-x=distance John rode his bike
travel time=distance/speed
..

lcd:12
4x+10-x=12
3x=2
x=2/3 mile (distance John walked)
(2/3)/3=2/9 hr
how long did John walk for? 2/9 hr

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