AMC 8 2004 Problem 6

AMC8 2004 年第 6

百分比★★☆☆☆
After Sally takes 20 shots, she has made 55% of her shots. After she takes 5 more shots, she raises her percentage to 56%. How many of the last 5 shots did she make?
在 Sally 射击的 20 次中,有 55%的命中率。当她再多射击 5 次,则命中率提高到了 56%.那么最后射击的 5 次中,有几次命中?
  1. A.1
  2. B.2
  3. C.3
  4. D.4
  5. E.5

正确答案 · Correct Answer

C

解析 · Solution

解析整理中

继续练习

真题版权归属 MAA(AMC)。本站仅供学习用途。版权方如有异议,请联系本站予以下架。

Problems © MAA (AMC). This site is for study purposes only. Rightsholders may contact us for removal.