Question 1145893

Andrea has 4 hours to spend training for an upcoming race.  She completes her training by running full speed the distance of the race and walking back the same distance to cool down.  If she runs at a speed of 8mph
 and walks back at a speed of 2mph, how long should she plan to spend walking back?
<pre>Let time she should plan on spending to walk back be T
Then we get the following DISTANCE equation: 2T = 8(4  -  T)
2T = 32  -  8T
2T + 8T = 32
10T = 32
T, or time she should plan on spending to walk back = {{{highlight_green(matrix(1,4, 32/10, "=", 3.2, hours))}}}