document.write( "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 \n" ); document.write( "

Algebra.Com's Answer #472820 by sofiyac(983) $\"\"$ $\"About$

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)
\n" ); document.write( "next we have 80 miles in 2 hours 40min so in (2*60+40=160 minutes)
\n" ); document.write( "now add up the total miles traveled we have 120+80=200 miles total
\n" ); document.write( "now add up the total minutes traveled we have 180+160=340 minutes
\n" ); document.write( "next to find average rate divide total miles by total minutes, and we can also convert to hours by multiplying the top by 60
\n" ); document.write( " $\"%28200%2A60%29%2F340\"$ you can cancel out a 0 on top and 0 on bottom
\n" ); document.write( " $\"%28200%2A6%29%2F34\"$ next we can reduce top and bottom by 2
\n" ); document.write( " $\"%28200%2A3%29%2F17\"$ now you can multiply the top
\n" ); document.write( " $\"600%2F17\"$ calculator would be fine here
\n" ); document.write( "35.29 miles per hour\r
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