document.write( "Question 924103: Ryan traveled to the ferry office and back. It took one hour less time to get there than it did to get back.The average speed on the trip there was 25 mph. The average speed on the way back was 20 mph. How many hours did the trip there take? \n" ); document.write( "
Algebra.Com's Answer #560598 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
y = round trip distance to office
\n" ); document.write( "---
\n" ); document.write( "go to office:
\n" ); document.write( "time = x
\n" ); document.write( "---
\n" ); document.write( "return from office:
\n" ); document.write( "time = x + 1
\n" ); document.write( "s = d/t
\n" ); document.write( "20 = (y/2)/(x + 1)
\n" ); document.write( "20(x + 1) = (y/2)
\n" ); document.write( "40(x + 1) = y
\n" ); document.write( "40x + 40 = y
\n" ); document.write( "40x - y = -40
\n" ); document.write( "---
\n" ); document.write( "s = d/t
\n" ); document.write( "25 = y/(x + x + 1)
\n" ); document.write( "25 = y/(2x + 1)
\n" ); document.write( "25(2x + 1) = y
\n" ); document.write( "50x + 25 = y
\n" ); document.write( "50x - y = -25
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "40x - y = -40
\n" ); document.write( "50x - y = -25
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "solution:
\n" ); document.write( "x = time to go to office = 1.5 hours
\n" ); document.write( "x + 1 = time to return from office = 2.5 hours
\n" ); document.write( "2x + 1 = total round trip time to office = 4 hours
\n" ); document.write( "y = round trip distance to office = 100 miles
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
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