document.write( "Question 1062633: Car A and car B travel towards each other on a 42-km straight highway.Car A travels at a rate of 60 kph while car B travels at a rate of 80 kph.In how many minutes will the 2 cars meet? \n" ); document.write( "
Algebra.Com's Answer #677596 by josmiceli(19441)\"\" \"About 
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Think of this as one of the cars standing still
\n" ); document.write( "and the other traveling at the sum of their speeds
\n" ); document.write( "until it meets the other car
\n" ); document.write( "Let \"+t+\" = time in hrs until they meet
\n" ); document.write( "------------------------------------
\n" ); document.write( "\"+42+=+%28+60+%2B+80+%29%2At+\"
\n" ); document.write( "\"+42+=+140t+\"
\n" ); document.write( "\"+t+=+.3+\" hrs
\n" ); document.write( "Convert hrs to minutes
\n" ); document.write( "\"+.3%2A60+=+18+\"
\n" ); document.write( "They will meet in 18 min
\n" ); document.write( "---------------------------
\n" ); document.write( "Check answer:
\n" ); document.write( "\"+d%5B1%5D+=+60t+\"
\n" ); document.write( "\"+d%5B1%5D+=+60%2A.3+\"
\n" ); document.write( "\"+d%5B1%5D+=+18+\" km
\n" ); document.write( "and
\n" ); document.write( "\"+d%5B2%5D+=+80t+\"
\n" ); document.write( "\"+d%5B2%5D+=+80%2A.3+\"
\n" ); document.write( "\"+d%5B2%5D+=+24++\" km
\n" ); document.write( "and
\n" ); document.write( "\"+18+%2B+24+=+42+\" km
\n" ); document.write( "OK
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