<PRE><B>Question 775307</B>
3 hours at 40mph means he cover 3*40=120 miles in 3 hours (3 hours=3*60=180 minutes)
next we have 80 miles in 2 hours 40min so in (2*60+40=160 minutes)
now add up the total miles traveled we have 120+80=200 miles total
now add up the total minutes traveled we have 180+160=340 minutes
next to find average rate divide total miles by total minutes, and we can also convert to hours by multiplying the top by 60
{{{(200*60)/340}}} you can cancel out a 0 on top and 0 on bottom
{{{(200*6)/34}}} next we can reduce top and bottom by 2
{{{(200*3)/17}}} now you can multiply the top
{{{600/17}}} calculator would be fine here
35.29 miles per hour

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