document.write( "Question 149044: 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? \n" ); document.write( "
Algebra.Com's Answer #109354 by ptaylor(2198)\"\" \"About 
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Let x=amount of time it will it take all 3 of them working together to mix the 20 drinks. {Our final equation will be of the form: Rate at which they mix drinks when working together (drinks/min) times x minutes equals 20 drinks}\r
\n" ); document.write( "\n" ); document.write( "Steven mixes at the rate of 4 drinks per minute
\n" ); document.write( "Sue mixes at the rate of 2 drinks per minute
\n" ); document.write( "Jack mixes at the rate of 20/15 or 4/3=1 1/3 drinks per minute\r
\n" ); document.write( "\n" ); document.write( "Together, they mix at the rate of 4 + 2 + (1 1/3)=7 1/3 drinks per minute\r
\n" ); document.write( "\n" ); document.write( "So, our equation to solve is:\r
\n" ); document.write( "\n" ); document.write( "(7 1/3)*x=20 divide each side by 7 1/3
\n" ); document.write( "x=2.73 minutes---------------------amount of time it will it take all 3 of them working together to mix the 20 drinks
\n" ); document.write( "CK
\n" ); document.write( "2.73*7.33=20
\n" ); document.write( "20.019~~~~20\r
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\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor\r
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