document.write( "Question 926098: ali can do a job in 9 hr, while susan can do the same job in 5 hr. how long would it take them to do the job if they worked together? \n" ); document.write( "
Algebra.Com's Answer #561983 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
x = ali work rate (jobs/hr)
\n" ); document.write( "y = susan work rate (jobs/hr)
\n" ); document.write( "---
\n" ); document.write( "rate = work/time
\n" ); document.write( "time = work/rate
\n" ); document.write( "---
\n" ); document.write( "rate working together:
\n" ); document.write( "x + y = 1/9 + 1/5
\n" ); document.write( "---
\n" ); document.write( "time working together:
\n" ); document.write( "time = 1/(x + y) = 1/( 1/9 + 1/5 )
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "time = 3.21428571429 hours
\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" );