SOLUTION: Carlos walks around the track 10 times at a rate of x laps per hour. He runs around the track 8 times at a rate of 3x laps per hour. Write and solve an expression for the time it t

Question 872170: Carlos walks around the track 10 times at a rate of x laps per hour. He runs around the track 8 times at a rate of 3x laps per hour. Write and solve an expression for the time it takes him to go 18 times around the track.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Carlos walks around the track 10 times at a rate of x laps per hour.
He runs around the track 8 times at a rate of 3x laps per hour.
Write and solve an expression for the time it takes him to go 18 times around the track.
:
Write a time equation; time = dist/speed
:
Walk time + run time = total time
+ =
find the common denominator (3x)
= time to go around 18 times
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