2001 CEMC Gauss (Grade 8) Problems/Problem 19

Revision as of 20:49, 22 October 2025 by Anabel.disher (talk | contribs) (Created page with "{{Duplicate|2001 CEMC Gauss (Grade 8) #19 and 2001 CEMC Gauss (Grade 7) #20}} ==Problem== Anne,...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
The following problem is from both the 2001 CEMC Gauss (Grade 8) #19 and 2001 CEMC Gauss (Grade 7) #20, so both problems redirect to this page.

Problem

Anne, Beth and Chris have $10$ candies to divide amongst themselves. Anne gets at least $3$ candies, while Beth and Chris each get at least $2$. If Chris gets at most $3$, the number of candies that Beth could get is

$\text{ (A) }\ 2 \qquad\text{ (B) }\ 2 \text{ or } 3 \qquad\text{ (C) }\ 3 \text { or } 4 \qquad\text{ (D) }\ 2\text{, } 3 \text { or } 5 \qquad\text{ (E) }\ 2\text{, } 3\text{, } 4 \text{ or } 5$

Solution 1

Because Chris must have at least $2$ candies but gets at most $3$, he must have either $2$ candies or $3$ candies.

If Chris gets $2$ candies, then that means that Anne and Beth get $8$ candies in total. Anne gets at least $3$, so the most that Beth can get is $5$. However, he must have at least $2$, so Beth can have $\boxed {\textbf {(E) } 2\text{, } 3\text{, } 4 \text{ or } 5}$ candies.

~anabel.disher

Solution 2 (answer choices)

We can start by realizing that Chris must have $2$ or $3$ candies like in solution 1.

If Chris gets $2$ candies, then that means that Anne and Beth get $8$ candies in total. Anne gets at least $3$, so the most that Beth can get is $5$. We can see that eliminates all answer choices except D and E because D and E are the only answers that allow Beth to have $5$ candies.

We also see that Beth could have $4$ candies while Anne could have $4$. D doesn't have $4$ as a possible option, so $\boxed {\textbf {(E) } 2\text{, } 3\text{, } 4 \text{ or } 5}$ is the only option left.

2001 CEMC Gauss (Grade 8) (ProblemsAnswer KeyResources)
Preceded by
Problem 18
Followed by
Problem 20
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
CEMC Gauss (Grade 8)
2001 CEMC Gauss (Grade 7) (ProblemsAnswer KeyResources)
Preceded by
Problem 19
Followed by
Problem 21
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
CEMC Gauss (Grade 7)