Question 1161271

Solve by elimination method.

Jill is 27.5 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 3 kilometers per hour. They meet in 5 hours. How fast is Joe walking?
<pre>Let Joe's speed be S
Then we get: 5S + 5(3) = 27.5
5S + 15 = 27.5
5S = 12.5
Joe's speed or {{{highlight_green(matrix(1,6, S, "=", 12.5/5, "=", 2.5, "km/h"))}}}