document.write( "Question 427814: I have a question that says if Jack can mix 20 drinks in 5 minutes, Lisa can mix 20 drinks in 10 minutes, and Jorge can mix 20 drinks in 15 minutes, How long will it take all three of them to mix 20 drinks. I don't know what equation to put it in to find the answer. Please help. \n" ); document.write( "
Algebra.Com's Answer #297493 by ankor@dixie-net.com(22740)\"\" \"About 
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I have a question that says if Jack can mix 20 drinks in 5 minutes,
\n" ); document.write( " Lisa can mix 20 drinks in 10 minutes, and Jorge can mix 20 drinks in 15 minutes,
\n" ); document.write( " How long will it take all three of them to mix 20 drinks.
\n" ); document.write( ":
\n" ); document.write( "Here is a simple equation you can use to solve this
\n" ); document.write( "Let t = time required working all together
\n" ); document.write( "Let the completed job = 1 (the mixing of 20 drinks)
\n" ); document.write( "\"t%2F5\" + \"t%2F10\" + \"t%2F15\" = 1
\n" ); document.write( "You can clear the denominators by multiplying by 30, and solve for t
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