document.write( "Question 821197: Jonathan can complete a project in 15 days and Stephanie can do the same project in 45 days. Jonathan worked on the project alone for 3 days before Stephanie joined him. How many days did Stephanie work on the project until it was done? PLEASE ANSWER ASAP \n" ); document.write( "
Algebra.Com's Answer #493946 by richwmiller(17219)\"\" \"About 
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in three days Jon completed 3/15=1/5 of the job.
\n" ); document.write( "3/15+x/15+x/45=1
\n" ); document.write( "3x/45+x/45=12/15
\n" ); document.write( "4x/45=4/5
\n" ); document.write( "x/9=1
\n" ); document.write( "x=9 they worked 9 days together\r
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\n" ); document.write( "3/15+9/15+9/45=1
\n" ); document.write( "3/15+9/15+3/15=1
\n" ); document.write( "15/15=1
\n" ); document.write( "ok\r
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