document.write( "Question 153630: A truck enters a highway driving 60 mph. A car enters the same highway 13 minutes later and driving 71 mph. How long does it take the car to pass the truck? \n" ); document.write( "
Algebra.Com's Answer #113077 by stanbon(75887)\"\" \"About 
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A truck enters a highway driving 60 mph. A car enters the same highway 13 minutes later and driving 71 mph. How long does it take the car to pass the truck?
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\n" ); document.write( "Car DATA:
\n" ); document.write( "distance = x miles ; rate = 71 mph ; time = d/r = x/71 hrs
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\n" ); document.write( "Truck DATA:
\n" ); document.write( "distance = x miles ; rate = 60 mph ; time = x/60 hrs
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\n" ); document.write( "EQUATION:
\n" ); document.write( "truck time - car time = 13 min = (13/60) hrs.
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\n" ); document.write( "x/60 - x/71 = 13/60
\n" ); document.write( "Multiply thru by 71*60:
\n" ); document.write( "71x - 60x = 71*13
\n" ); document.write( "11x = 71*13
\n" ); document.write( "x = 83.91 miles (distance required for the car to catch the truck)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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