document.write( "Question 826313: A cargo plane flew from the US across the Atlantic at 207 miles per hour, and flew back to the US at 227 miles per hour. Given that the first trip took two hours longer, how long was the return trip? \n" ); document.write( "

Algebra.Com's Answer #498014 by TimothyLamb(4379) $\"\"$ $\"About$

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---
\n" ); document.write( "s = d/t
\n" ); document.write( "d = s*t
\n" ); document.write( "---
\n" ); document.write( "x = time of return trip
\n" ); document.write( "---
\n" ); document.write( "out:
\n" ); document.write( "d = s*t
\n" ); document.write( "d = 207(x + 2)
\n" ); document.write( "---
\n" ); document.write( "return:
\n" ); document.write( "d = s*t
\n" ); document.write( "d = 227x
\n" ); document.write( "---
\n" ); document.write( "207(x + 2) = 227x
\n" ); document.write( "207x + 414 = 227x
\n" ); document.write( "20x = 414
\n" ); document.write( "x = 414/20
\n" ); document.write( "x = 20.699999999999999
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "the return trip was 20.7 hours, or 20 hours and 42 minutes
\n" ); document.write( "---
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