Question 936810: Dame 8th grade! My 13 year old gave me this problem to solve and it's killing me. Can anyone helps us? We have to define the variable and write the equation.
Tyrell exercised this week both by walking and by biking. He walked at a rate of 4 mi/h and biked at a rate of 12 mi/h. The total distance he covered both walking and biking was 36 miles, and Tyrell spent one more hour walking than biking.
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Tyrell exercised this week both by walking and by biking. He walked at a rate of 4 mi/h and biked at a rate of 12 mi/h. The total distance he covered both walking and biking was 36 miles, and Tyrell spent one more hour walking than biking.
================
That's mildly interesting, but you didn't ask a question.
-----
If you want to find the times biking & walking:
W = hours walking
B = hours biking
---
4W + 12B = 36
W = B + 1
----
If you want to solve it:
Sub for W in the 1st equation
4(B + 1) + 12B = 36
4B + 4 + 12B = 36
16B = 32
B = 2 hours biking
----
W = B + 1
W = 3 hours walking
=======================
Not a lot for a week, imo.
|
|
|
