document.write( "Question 156331: 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 #115121 by ptaylor(2198)\"\" \"About 
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\n" ); document.write( "Let x=amount of time it takes all three working together to mix 20 drinks\r
\n" ); document.write( "\n" ); document.write( "Steven mixes drinks at the rate of 4 drinks per min
\n" ); document.write( "Sue mixes drinks at the rate of 2 drinks per min
\n" ); document.write( "Jack mixes drinks at the rate of 20/15= 4/3 drinks per min\r
\n" ); document.write( "\n" ); document.write( "Together they mix at the rate of 4+2+4/3= 7 1/3 drinks per min
\n" ); document.write( "So, our equation to solve is:
\n" ); document.write( "(7 1/3)x=20 or
\n" ); document.write( "(22/3)x=20 multiply each side by 3
\n" ); document.write( "22x=60
\n" ); document.write( "x=2.73 min----------------------ans\r
\n" ); document.write( "\n" ); document.write( "CK
\n" ); document.write( "Steven=4*2.73=10.91 drinks
\n" ); document.write( "Sue=2*2.73=5.45 drinks
\n" ); document.write( "Jack=(4/3)*2.73=3.64 drinks
\n" ); document.write( "10.91+5.45+3.63=~~~~20 drinks\r
\n" ); document.write( "\n" ); document.write( "Hope this helps--ptaylor
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