document.write( "Question 1205819: Sam is driving from Chicago to San Francisco, a distance of 2220 miles. He covers the first 192 miles in 4 hrs. At this rate, how long will the entire trip take? \n" ); document.write( "

Algebra.Com's Answer #842860 by ikleyn(52872) $\"\"$ $\"About$

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\n" ); document.write( "Sam is driving from Chicago to San Francisco, a distance of 2220 miles.
\n" ); document.write( "He covers the first 192 miles in 4 hrs. At this rate, how long will the entire trip take?
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\n" ); document.write( "\n" ); document.write( " I will show you two ways to solve this simple problem.\r
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\n" ); document.write( "\n" ); document.write( " One way is using the rate; another way is using proportion.\r
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document.write( "              1. Using the rate\r\n" );
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document.write( "The rate is the distance divided by the time:   = 48 miles per hour.\r\n" );
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document.write( "Now the total time to cover 2220 miles at this rate is the distance divided by the rate:\r\n" );
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document.write( "    total time =  = 46.25 hours = 46 hours = 46 hours and 15 minutes.    ANSWER\r\n" );
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document.write( "At this post, this solution is complete.\r\n" );
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document.write( "              2. Using proportion\r\n" );
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document.write( "The rate is the same. Hence, we can write this proportion\r\n" );
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document.write( "     = ,\r\n" );
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document.write( "where x is the unknown time.\r\n" );
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document.write( "From this proportion, you find x\r\n" );
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document.write( "    x =  =  46.25 hours = 46 hours = 46 hours and 15 minutes,\r\n" );
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document.write( "giving the same answer.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Thus the problem is solved in two ways for your better understanding.\r
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\n" ); document.write( "\n" ); document.write( "Notice, that in proportion, each its side represents the rate, which is assumed the same
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