document.write( "Question 125802: Two cars start from towns 400 mi apart and travel toward each other. They meet after 4 hrs. Find the speed of each car if one travels 20mph faster than the other. \n" ); document.write( "
Algebra.Com's Answer #92183 by ankor@dixie-net.com(22740)\"\" \"About 
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Two cars start from towns 400 mi apart and travel toward each other. They meet after 4 hrs. Find the speed of each car if one travels 20mph faster than the other.
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\n" ); document.write( "Let s = speed of the slower car
\n" ); document.write( "then
\n" ); document.write( "(s+20) = speed of the faster
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\n" ); document.write( "When they meet, we know they will have traveled a total of 400 mi.
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\n" ); document.write( "Make a distance equation: Distance = time * speed
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\n" ); document.write( "Slow car dist + fast car dist = 400 miles
\n" ); document.write( "4s + 4(s+20) = 400
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\n" ); document.write( "4s + 4s + 80 = 400
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\n" ); document.write( "8x = 400 - 80
\n" ); document.write( "s = \"320%2F8\"
\n" ); document.write( "s = 40 mph is the slow car
\n" ); document.write( "and
\n" ); document.write( "60 mph is the fast car
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\n" ); document.write( "We can check our solution by finding the total distance:
\n" ); document.write( "4(40) + 4(60) = 400 \n" ); document.write( "
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