document.write( "Question 109165This question is from textbook
\n" ); document.write( ": Gail and Bill drove to a beach at an average speed of 50 mi/h. They returned home over the same road at an average speed of 55 mi/h. The trip home took 30 min less time. How far is the beach from their home? \n" ); document.write( "
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Gail and Bill drove to a beach at an average speed of 50 mi/h. They returned home over the same road at an average speed of 55 mi/h. The trip home took 30 min less time. How far is the beach from their home?
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\n" ); document.write( "To the beach DATA;
\n" ); document.write( "Rate = 50 mph ; distance = x miles ; time = d/r = x/50 hrs
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\n" ); document.write( "From the beach DATA:
\n" ); document.write( "Rate = 55 mph ; distance = x miles ; time = d/r = x/55
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\n" ); document.write( "EQUATION:
\n" ); document.write( "Time to beach - Time from beach = 1/2
\n" ); document.write( "x/50 - x/55 = 1/2
\n" ); document.write( "(55-50)x/50*55 = 1/2
\n" ); document.write( "5x = 25*55
\n" ); document.write( "x = 25*11
\n" ); document.write( "x = 275 miles
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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