document.write( "Question 573771: how many miles per hour does a car travel if it makes a 40 mile trip in 30 minutes \n" ); document.write( "
Algebra.Com's Answer #368872 by ptaylor(2198)\"\" \"About 
You can put this solution on YOUR website!
Distance(d) equals Rate(r) times Time(t) or d=rt; r=d/t and t=d/r
\n" ); document.write( "d= 40 mi
\n" ); document.write( "t=30 min=1/2 hour
\n" ); document.write( "so, r=d/t=40 mi/(1/2hr)=80 mph\r
\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor
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