document.write( "Question 119332: Darla can was and detail 3 cars in 2 hours. Larry can wash and detail the same 3 cars in 1.5 hours. About how long will it take to wash and detail the 3 cars if Darla and Larry worked together? \n" ); document.write( "

Algebra.Com's Answer #87434 by josmiceli(19441) $\"\"$ $\"About$

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Washing and detailing the 3 cars can be considered 1 job, since that
\n" ); document.write( "is all the problem is interested in.
\n" ); document.write( "(1 job / 2 hrs) + (1 job / 1.5 hrs) = 1 job / k hrs
\n" ); document.write( " $\"1%2F2+%2B+1%2F1.5+=+1+%2F+k\"$
\n" ); document.write( "multiply both sides by 3
\n" ); document.write( " $\"1.5+%2B+2+=+3%2Fk\"$
\n" ); document.write( " $\"3.5+=+3%2Fk\"$
\n" ); document.write( " $\"k+=+3%2F3.5\"$
\n" ); document.write( " $\"k+=+.857\"$ hrs
\n" ); document.write( " $\".857%2A60+=+51.42\"$
\n" ); document.write( "Working together, they can do the job in 51 min 25 sec approximately \n" ); document.write( "

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