Question 697172
Three machines are twisting pretzels. Two are old and one is new. The new machine can twist pretzels twice as fast as an old machine can. An old machine can twist the daily quota of pretzels in 20 hours. How long will it take to make the quota if the three machines are operated at the same time?
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The new machine takes 10 hours.
The 2 old machines equal the output of the 1 new machine.
10/2 = 5 hours