document.write( "Question 107495This question is from textbook Intermediate Algebra
\n" ); document.write( ": If Sarah Clark can do a job in 5 hours and Dick Belli and Sarah working together can do the same job in 2 hours, find how long it takes Dick to do the job alone. \n" ); document.write( "

Algebra.Com's Answer #137151 by Mathtut(3670) $\"\"$ $\"About$

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let x be the number of hours it takes Sarah to do the job
\n" ); document.write( "let y be the number of hours it takes Dick to do the job
\n" ); document.write( ":
\n" ); document.write( "so sarah can do 1/x of the job per hour
\n" ); document.write( "and Dick can do 1/y of the job per hour
\n" ); document.write( ":
\n" ); document.write( " $\"%28%281%2Fx%29%2B%281%2Fy%29%292=1\"$
\n" ); document.write( ":
\n" ); document.write( " $\"%281%2F5%29%2B%281%2Fy%29%292=1\"$
\n" ); document.write( ":
\n" ); document.write( " $\"%282%2F5%29%2B%282%2Fy%29=1\"$
\n" ); document.write( ":
\n" ); document.write( " $\"2%2Fy=3%2F5\"$
\n" ); document.write( ":
\n" ); document.write( " $\"3y=10\"$
\n" ); document.write( ":
\n" ); document.write( " $\"y=10%2F3\"$ hours or 3 and 1/3 hours(time it takes Dick to do job by himself \n" ); document.write( "

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