Chicken Nuggets

McDaniels sells chicken nuggets in batches of x and y nuggets. Alice walked inside a McDaniels and asked the cashier, “May I have 59 chicken nuggets?” The cashier replied, “Sorry, we cannot make that amount, but we can fulfill any order greater than that and most orders less than that.” Alice said, “It’s okay, I wasn’t that hungry anyway, may I have 25 chicken nuggets instead?” The cashier shook his head and replied, “We can’t make that either.” Alice responded, “Ok, can I have 20?” The cashier once again told Alice that McDaniels could not complete her order. What is the value of x+y? Assume that McDaniels will use any combination of their two sizes to fulfill an order


The answer is 34.

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2 solutions

Jonathan Poss
Jul 30, 2019

By the Chicken McNugget Theorem, x y x y = 59 xy-x-y=59 . By adding 1 1 to both sides, this can be factored into ( x 1 ) ( y 1 ) = 60 (x-1)(y-1)=60 . This gives 6 6 possible distinct values of ( x , y ) (x,y) : ( 2 , 61 ) , ( 3 , 31 ) , ( 4 , 21 ) , ( 5 , 16 ) , ( 6 , 13 ) , (2,61), (3,31), (4,21), (5,16), (6,13), and ( 7 , 11 ) (7,11) . Only one of these pairs, ( 3 , 31 ) (3,31) , cannot make both 20 20 and 25 25 .

I'd say that "most orders less than that" is an overstatement. There are 29 29 non-makable orders between 1 1 and 58. 58. See the wiki for a proof.

Patrick Corn - 1 year, 10 months ago

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Yes, I know. I thought about removing that part, but I don’t think it really makes a difference in the problem, unless one really overthinks it.

Jonathan Poss - 1 year, 10 months ago
Samuel Li
Aug 2, 2019

This is a trivial problem that can be solved using the superior mathematics of linguistical analysis. Let's get started. Since the name 'McDaniels' has 9 9 letters, subtract 9 9 from 59 59 and you get 50 50 . Divide 50 50 by 2 2 because there are two variables, x x and y y . Now you have 25 25 . Notice that the number 25 25 also happens to appear in the middle of the problem. Coincidence? I think not. Now subtract 25 25 from 59 59 because the question asks for x x + y y and only simpletons use addition while true gamers use subtraction. Now you have the correct answer of 34 34 .

BRO WHAT A COINCIDENCE

gaoyi zhu - 1 year, 2 months ago

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