document.write( "Question 979546: dinesh & ramesh can independently complete a price of work in 80 &120 minutes respectively.of they work together,how much time will they take to complete the work ? \n" ); document.write( "

Algebra.Com's Answer #600835 by josmiceli(19441) $\"\"$ $\"About$

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Add thir rates of working
\n" ); document.write( "Dinesh's rate:
\n" ); document.write( "[ 1 job ] / [ 80 min ]
\n" ); document.write( "Ramesh's rate:
\n" ); document.write( "[ 1 job ] / [ 120 min ]
\n" ); document.write( "----------------------
\n" ); document.write( "let $\"+t+\"$ = time in minutes to finish
\n" ); document.write( "job if they work together
\n" ); document.write( " $\"+1%2F80+%2B+1%2F120+=+1%2Ft+\"$
\n" ); document.write( "Multiply both sides by $\"+240t+\"$
\n" ); document.write( " $\"+3t+%2B+2t+=+240+\"$
\n" ); document.write( " $\"+5t+=+240+\"$
\n" ); document.write( " $\"+t+=+48+\"$
\n" ); document.write( "Working together, they can finish job
\n" ); document.write( "in 48 minutes
\n" ); document.write( "check:
\n" ); document.write( " $\"+1%2F80+%2B+1%2F120+=+1%2Ft+\"$
\n" ); document.write( " $\"+1%2F80+%2B+1%2F120+=+1%2F48+\"$
\n" ); document.write( " $\"+.0125+%2B+.008333+=+.0208333+\"$
\n" ); document.write( " $\"+.020833+=+.0208333+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );