document.write( "Question 432043: 1) If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks?\r
\n" ); document.write( "\n" ); document.write( "2) Is there a formula to solve these types of problems?
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Algebra.Com's Answer #299681 by jorel1380(3719)\"\" \"About 
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1)If Steven can mix 20 drinks in 5 minutes, then he mixes 4 drinks per minute. Sue mixes 2 drinks per minute, and Jack mixes 4/3 drink per minute. Thus they can mix:\r
\n" ); document.write( "\n" ); document.write( "4+2+4/3=12+6+4/3=22/3 drinks per minute\r
\n" ); document.write( "\n" ); document.write( "To pour 20 drinks they need 20/22/3 minutes, or 60/22 or 30/11 minutes.\r
\n" ); document.write( "\n" ); document.write( "2)A formula might be Total Work/Cumulative work per unit equals time.
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