AMC8 2009

AMC8 2009 · Q23

AMC8 2009 · Q23. It mainly tests Linear equations, Word problems (algebra).

On the last day of school, Mrs. Wonderful gave jelly beans to her class. She gave each boy as many jelly beans as there were boys in the class. She gave each girl as many jelly beans as there were girls in the class. She brought 400 jelly beans, and when she finished, she had six jelly beans left. There were two more boys than girls in her class. How many students were in her class?

在放学的最后一天，Wonderful 夫人给她的班级分发果冻豆。她给每个男孩的果冻豆数量等于班上男孩的数量。她给每个女孩的果冻豆数量等于班上女孩的数量。她带来了 400 颗果冻豆，分发完毕后还剩 6 颗。班上有比女孩多 2 个男孩。她的班级有多少学生？

(A) 26 26

(B) 28 28

(D) 32 32

(E) 34 34

Answer

Correct choice: (B)

正确答案：（B）

Solution

Answer (B): Mrs. Wonderful gave $400-6=394$ jelly beans to the class. Make a table, starting with a small, reasonable number of girls and boys. The number of students is 13 + 15 = 28.

答案（B）：Wonderful 夫人给全班发了 $400-6=394$ 颗果冻豆。制作一张表，从一个较小且合理的女生和男生人数开始。

Topics