SOLUTION: A motorist travels for 3 hrs at 40miles per hour and then covers distance of 80 miles in 2 hrs and 40 minutes. His average rate for entire trip is

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Question 775307: A motorist travels for 3 hrs at 40miles per hour and then covers distance of 80 miles in 2 hrs and 40 minutes. His average rate for entire trip is
Answer by sofiyac(983) About Me  (Show Source):
You can put this solution on YOUR website!
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
%28200%2A60%29%2F340 you can cancel out a 0 on top and 0 on bottom
%28200%2A6%29%2F34 next we can reduce top and bottom by 2
%28200%2A3%29%2F17 now you can multiply the top
600%2F17 calculator would be fine here
35.29 miles per hour