document.write( "Question 855813: Mr.bean can wash car in 15mint
\n" ); document.write( "his son take twice as long as to do same job if they work togather how many mint wil tak same job? \n" ); document.write( "

Algebra.Com's Answer #515577 by josmiceli(19441) $\"\"$ $\"About$

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Mr Bean's rate:
\n" ); document.write( "( 1 car ) / ( 15 min )
\n" ); document.write( "Son's rate:
\n" ); document.write( "( 1 car ) / ( 30 min )
\n" ); document.write( "Working together:
\n" ); document.write( "( 1 car ) / ( t min )
\n" ); document.write( "------------------
\n" ); document.write( "Add their rates of working
\n" ); document.write( " $\"+1%2F15+%2B+1%2F30+=+1%2Ft+\"$
\n" ); document.write( "Multiply both sides by $\"+30t+\"$
\n" ); document.write( " $\"+2t+%2B+t+=+30+\"$
\n" ); document.write( " $\"+3t+=+30+\"$
\n" ); document.write( " $\"+t+=+10+\"$
\n" ); document.write( "Working together, it takes them
\n" ); document.write( "10 min to wash a car
\n" ); document.write( " \n" ); document.write( "

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