SOLUTION: Carrie walks at 3mph
Crystal rides bike at 9mph
carrie takes 20 minutes longer than Crystal to get to school.
They live the same distance from school.
What is the distance to
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Question 229387: Carrie walks at 3mph
Crystal rides bike at 9mph
carrie takes 20 minutes longer than Crystal to get to school.
They live the same distance from school.
What is the distance to school?
This is what I have, not making sense?
d=rxt
d= 3 x (t + 20)
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
you know the rates
the distances are equal
solve for the time and then substitute to find the distance
(remember: 20 min is 1/3 hr)
3(t + 1/3) = 9 (t) ___ 3t + 1 = 9t ___ 1 = 6t ___ 1/6 = t
substituting ___ d = 9(1/6) = 9/6 = 1.5 mi
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