document.write( "Question 928430: Karen jogged at an average rate of 8 mph from her house to school. She walked home at a rate of 4 mph. If the entire trip took 3 hours, how far is it from her home to school?
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #563621 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
s = d/t
\n" ); document.write( "t = d/s
\n" ); document.write( "d = distance from home to school (miles)
\n" ); document.write( "---
\n" ); document.write( "time to school:
\n" ); document.write( "a = d/8
\n" ); document.write( "---
\n" ); document.write( "time to home:
\n" ); document.write( "b = d/4
\n" ); document.write( "---
\n" ); document.write( "total time:
\n" ); document.write( "a + b = 3
\n" ); document.write( "d/8 + d/4 = 3
\n" ); document.write( "4d/4*8 + 8d/4*8 = 3
\n" ); document.write( "4d + 8d = 3*4*8
\n" ); document.write( "12d = 3*4*8
\n" ); document.write( "d = 3*4*8/12
\n" ); document.write( "d = 8
\n" ); document.write( "---
\n" ); document.write( "d = distance from home to school (miles) = 8
\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( "Convert fractions, decimals, and percents:
\n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php
\n" ); document.write( "---
\n" ); document.write( "Calculate and graph the linear regression of any data set:
\n" ); document.write( "https://sooeet.com/math/linear-regression.php
\n" ); document.write( "
\n" );