document.write( "Question 353948: 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 20 drinks? \n" ); document.write( "
Algebra.Com's Answer #253014 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 1/5+1/10+1/15=1/x \n" ); document.write( "(6+3+2)/30=1/x \n" ); document.write( "11/30=1/x \n" ); document.write( "11x=30 \n" ); document.write( "x=30/11 \n" ); document.write( "x=2.73 min. for the three to mix 20 drinks working together. \n" ); document.write( " |