document.write( "Question 1017457: if it takes 3 people 8 hours to wash 15 cars, how long would it take 2 people to wash 7 1/2 cars? \n" ); document.write( "

Algebra.Com's Answer #633752 by ikleyn(52858) $\"\"$ $\"About$

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\n" ); document.write( "if it takes 3 people 8 hours to wash 15 cars, how long would it take 2 people to wash 7 1/2 cars?
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document.write( "The rate of work calculated based on the first part of the condition, is\r\n" );
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document.write( " car-per-person-per-hour.\r\n" );
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document.write( "Let t be the time under the question. The the rate of work calculated based on this (second) part of the problem is \r\n" );
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document.write( " : (2*t) = .\r\n" );
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document.write( "We assume that the rate of work remains the same. It gives us an equation\r\n" );
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document.write( " = .\r\n" );
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document.write( "First reduce what you can:\r\n" );
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document.write( " = .\r\n" );
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document.write( "Now solve this proportion for t:\r\n" );
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document.write( "t = 3*2 = 6.\r\n" );
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document.write( "Answer. It will take 6 hours.\r\n" );
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\n" ); document.write( "\n" ); document.write( "If you want to see more solved rate of work problems, look into the lesson Rate of work problems in this site. \r
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\n" ); document.write( "\n" ); document.write( "At the end of that lesson you will find the list of other types rate of work problems that might be interesting to you, too.\r
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