document.write( "Question 1171824: Elisa left home and drove toward the mountains at an average speed of 74 km/h. Sometime later Stephanie left driving in the opposite direction with an average speed of 35 km/h. After Elisa had driven for four hours they were 401 km/h apart . How long did Stephanie drive? \n" ); document.write( "

Algebra.Com's Answer #796778 by ikleyn(52890) $\"\"$ $\"About$

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\n" ); document.write( "Elisa left home and drove toward the mountains at an average speed of 74 km/h. Sometime later Stephanie left driving
\n" ); document.write( "in the opposite direction with an average speed of 35 km/h. After Elisa had driven for four hours they were 401 km/h apart .
\n" ); document.write( "How long did Stephanie drive?
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document.write( "This super-simple problem can be solved in one line\r\n" );
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document.write( "    How long did Stephanie drive =  = 3 hours.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "The formula is SELF-EXPLANATORY.\r
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\n" ); document.write( "\n" ); document.write( "It says that Elisa covered 4*74 kilometers, and Stephanie covered the rest distance.\r
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\n" ); document.write( "\n" ); document.write( "So, to get the Stephanie time, we divide her distance by her average speed.\r
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\n" ); document.write( "\n" ); document.write( "That is all. Really simple problem.\r
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