SOLUTION: Dave can bike his excercise route an hour and a half faster than he can walk it. His biking speed is 9 miles per hour faster than his walking speed. His route is 6 miles long. Writ

Question 1081730: Dave can bike his excercise route an hour and a half faster than he can walk it. His biking speed is 9 miles per hour faster than his walking speed. His route is 6 miles long. Write an equation that can be used to find his walking speed, W. Do not solve
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
t, biking time
w, walking speed

                 SPEED        TIME        DISTANCE
BICYCLING        w+9           t           6
WALKING           w           t+3/2        6

Another way:

                 SPEED        TIME        DISTANCE
BICYCLING        w+9           6/(w+9)     6
WALKING           w           6/w          6
DIFFERENCE                    3/2

This way allows equation in just w, only using the time difference.

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