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Bluebook试题5 · 第 7 题

Bluebook试题5 · 原库模块 2 · Q7 原库参考解析

Two customers purchased the same kind of bread and eggs at a store. The first customer paid 12.45 dollars for 1 loaf of bread and 2 dozen eggs. The second customer paid 19.42 dollars for 4 loaves of bread and 1 dozen eggs. What is the cost, in dollars, of 1 dozen eggs?
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