document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1190116>Question 1190116</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write an equation to represent each sentence <BR>\n" );
document.write( "1.Two cars leave the hotel at the same time and travel in opposite direction. If one car travels at an average speed of 72 kph and the other at 11 kph faster than the first, how long will it take for them to be 372 kilometers apart? </SPAN>\n" );
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document.write( "speed of car A = 72 kph<BR>\n" );
document.write( "speed of car B = 72+11 = 83 kph\r<BR>\n" );
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document.write( "Use this formula<BR>\n" );
document.write( "distance = rate*time\r<BR>\n" );
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document.write( "After x hours, car A has traveled 72x kilometers and car B has traveled 83x kilometers.\r<BR>\n" );
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document.write( "They are traveling in opposite directions, which means the distance between them is the sum of their individual distances traveled. Use a number line to help see this.\r<BR>\n" );
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document.write( "The distance between them after x hours is<BR>\n" );
document.write( "72x+83x = 155x\r<BR>\n" );
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document.write( "Set this equal to the 372 km mentioned and isolate x<BR>\n" );
document.write( "155x = 372<BR>\n" );
document.write( "x = 372/155<BR>\n" );
document.write( "x = 2.4\r<BR>\n" );
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document.write( "Answer: 2.4 hours<BR>\n" );
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