Question 949880

Terrell drove to the mountains at an average 60mph. His return trip,  by the same roads, averaged 40mph. His total driving time was 12 hours. How far did he drive one way?
<pre>Let distance one-way, be D
Then time taken on outbound trip = {{{D/60}}}
Time taken on inbound trip = {{{D/40}}}
Since total time was 12 hours, we get: {{{D/60 + D/40 = 12}}}
2D + 3D = 1,440 -------- Multiplying by LCD, 120
5D = 1,440
D, or distance, one way = {{{1440/5}}}, or {{{highlight_green(288)}}} miles