I'm stumped on one of my practice questions and I don't even know what to google to look it up. Can anyone give me the formula or an explanation for this problem?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? A. 2 minutes and 44 seconds B. 2 minutes and 58 seconds C. 3 minutes and 10 seconds D. 3 minutes and 26 seconds E. 4 minutes and 15 seconds The answer is A. TIA
nightmare, RN 2 Articles; 1,297 Posts Specializes in Nursing Home ,Dementia Care,Neurology.. Oct 27, 2008 Steven can make 4 a minute.Sue 2 a minute.Jack 1.3 a minute.That's 7.3 per minute for all three of them. 20 x 7.3 = 146 .Divided by 60=2.4333 minutes.Well that's my working on it anyway.
MemphisTiger 150 Posts Oct 29, 2008 Thanks so much! It's amazing the stuff you can forget how to do...:)
smellyacres, BSN, RN 342 Posts Specializes in Surgical/Trauma ICU. Has 7 years experience. Oct 29, 2008 Anyone else remember the Boy Meets World episode with the problem like this in it? Topanga was the only one who could solve it....Ahh, that was a good show....But thanks, I never knew how to do that type of problem either.
PiperDave 3 Posts Sep 19, 2009 Took the test today, didn't see anything like that problem on it. very straight forward basic math.
