nobefab410 wrote:
ShowYoMoves wrote:
Can't there be only 3 page long chapters? Should the wording of the question clarify that both chapters of length 3 pages and 4 pages exist? Or is that to be assumed?
thats what i thought and the answer came out to be D
Let's analyze the scenarios where there can be either 0 chapters with 3 pages or 0 chapters with 4 pages.
If there are 0 chapters with 3 pages:
x=0
x=0, and the equation becomes
4y=18
4y=18, which doesn't have a positive integer solution for y
If there are 0 chapters with 4 pages:
y=0
y=0, and the equation becomes
3x=18
3x=18, which doesn't have a positive integer solution for x.
In both cases, if one of the quantities is 0, the other quantity doesn't yield a positive integer solution. Therefore, both cases are not valid solutions
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