document.write( "Question 1144880: On a residential single lane road there was a wreck that backed up traffic for 5 miles. 80% of the traffic consists of cars and 20% of the traffic consists of trucks. The average distance between vehicles is 3 feet. The average length of a car is 13.5 feet and the average length of a truck is 20 feet. Estimate how many vehicles are stuck in the traffic jam.\r
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\n" ); document.write( "\n" ); document.write( "A. 853 vehicles\r
\n" ); document.write( "\n" ); document.write( "B. 1510 vehicles\r
\n" ); document.write( "\n" ); document.write( "C. 2103 vehicles\r
\n" ); document.write( "\n" ); document.write( "D. 2320 vehicles\r
\n" ); document.write( "\n" ); document.write( "Is B correct?\r
\n" ); document.write( "\n" ); document.write( "The question and the answer choices in the link here: https://prnt.sc/p4af9h \n" ); document.write( "

Algebra.Com's Answer #766066 by ikleyn(52794) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "Let x be the TOTAL number of vehicles (the value under the question).\r\n" );
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document.write( "Then you have this equation\r\n" );
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document.write( "    0.8x*13.5 + 0.2x*20 + 3x - 3 = 5*5280\r\n" );
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document.write( "Its both sides express the length of the traffic jam in feet, by the OBVIOUS way.\r\n" );
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document.write( "From the equation\r\n" );
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document.write( "     x =  = 1483.315 (approximately).\r\n" );
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document.write( "Since we estimate to get the integer number, round it to the nearest integer.\r\n" );
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document.write( "ANSWER.  1483 vehicles.\r\n" );
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