document.write( "Question 453484: Two cars start from towns 840 miles apart and travel toward each other. They meet after 7 hours. Find the speed of each car if one travels 10mph faster than the other. \n" ); document.write( "
Algebra.Com's Answer #311560 by pedjajov(51)\"\" \"About 
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Each car travels r*t miles where:
\n" ); document.write( "r - speed of the car
\n" ); document.write( "t - time it travels
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\n" ); document.write( "If first car travels with speed r, then the other one travels with speed r+10.
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\n" ); document.write( "After 7 hours first car travels 7r miles, while other one travels 7(r+10) miles.
\n" ); document.write( "Together they travel 840 miles.
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\n" ); document.write( "7r+7(r+10)=840, divide by 7
\n" ); document.write( "r+r+10=840, combine like terms
\n" ); document.write( "2r+10=120, subtract 10
\n" ); document.write( "2r=110, divide by 2
\n" ); document.write( "r=55
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\n" ); document.write( "First car travels with speed of 55 mph, while the other one travels 65mph.
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