Difference between revisions of "1990 AJHSME Problems/Problem 10"

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==Problem==
 
 
On this monthly calendar, the date ahead of  one of the letters is added to the date behind <math>\text{C}</math>.  If this sum equals the sum of the dates behind <math>\text{A}</math> and <math>\text{B}</math>, then the ria is the stupido an rohan likes to give her a tight slap on her stupido face which you need sunglasses to look at or else you will turn blind
 
 
 
==Solution==
 
==Solution==
  

Revision as of 15:41, 31 July 2019

Solution

Looking at the positions of the letters, we see that if the date behind $\text{Q}$ is $q$, then the date behind $\textbf{A}$ is $q-6$ and the date behind $\textbf{B}$ is $q+6$. Thus, their sum is $2q$.

The date behind $\text{C}$ is $q-7$, so the desired letter is the one for which the date behind it is $2q-(q-7)=q+7$. This is letter $\text{P}\rightarrow \boxed{\text{A}}$.

See Also

1990 AJHSME (ProblemsAnswer KeyResources)
Preceded by
Problem 9
Followed by
Problem 11
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
All AJHSME/AMC 8 Problems and Solutions

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