2. 外语
  3. Bob has 40 coins consisting only of dimes and quarters. If the number of dimes is 10 more than twice the number of quarters, wha

Bob has 40 coins consisting only of dimes and quarters. If the number of dimes is 10 more than twice the number of quarters, wha

admin2022-11-09  10
问题 Bob has 40 coins consisting only of dimes and quarters. If the number of dimes is 10 more than twice the number of quarters, what is the total value of the coins.
选项 A、$9
B、$2.5
C、$3
D、$5.5
E、$12
答案D
解析 dimes指10美分硬币，quarter指25美分硬币，假设quarters的数目为x，那么dimes的数目便是2x+10，根据题意有：x+2x+10=40，得到x=10，因此硬币总价值是30×0.1+10×0.25=5.5(美元)。
转载请注明原文地址:https://kaotiyun.com/show/BjtO777K
本试题收录于： GMAT QUANTITATIVE题库GMAT分类
0

GMAT QUANTITATIVE

GMAT

相关试题推荐
随机试题
最新回复(0)