document.write( "Question 931755: A moving van leaves a house traveling at an average rate of 40 mi/h. The family leaves the house in a car an hour later. Following the same route as the moving van, the car travels at an average rate of 60 mi/h. How long will it take the car to catch up with the van? \n" ); document.write( "
Algebra.Com's Answer #565767 by TimothyLamb(4379)\"\" \"About 
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distance traveled by van when car leaves:
\n" ); document.write( "s = d/t
\n" ); document.write( "d = st
\n" ); document.write( "d = 40*1
\n" ); document.write( "d = 40 miles
\n" ); document.write( "---
\n" ); document.write( "speed of car relative to van:
\n" ); document.write( "60 - 40 = 20 mph
\n" ); document.write( "---
\n" ); document.write( "time car catches van:
\n" ); document.write( "t = d/s
\n" ); document.write( "t = 40 miles / 20 mph
\n" ); document.write( "t = 2 hours
\n" ); document.write( "---
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