document.write( "Question 366836: Elizabeth drove the first half of a trip at 36 mi/h. At what speed should she cover the remaining half in order to average 45 mi/h for the whole trip? The distance for the whole trip is 100 mi. \n" ); document.write( "
Algebra.Com's Answer #261664 by solver91311(24713)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "Remember, distance equals rate times time. In order to average 45 miles per hour for 100 miles, you must complete the trip in hours.\r
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\n" ); document.write( "\n" ); document.write( "If you averaged 36 miles per hour for the first 50 miles, then the first half of the trip must have taken hours.\r
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\n" ); document.write( "\n" ); document.write( "That means you must complete the last half of the trip in hours.\r
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\n" ); document.write( "\n" ); document.write( "Simply divide 50 miles by hours to get the required speed.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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