AMC12 2016 B

AMC12 2016 B · Q5

AMC12 2016 B · Q5. It mainly tests Rounding & estimation, Patterns & sequences (misc).

The War of 1812 started with a declaration of war on Thursday, June 18, 1812. The peace treaty to end the war was signed 919 days later, on December 24, 1814. On what day of the week was the treaty signed?

1812年战争于1812年6月18日（星期四）通过宣战开始。结束战争的和平条约在919天后签署，即1814年12月24日。该条约是在星期几签署的？

(A) Friday 星期五

(B) Saturday 星期六

(D) Monday 星期一

(E) Tuesday 星期二

Answer

Correct choice: (B)

正确答案：（B）

Solution

Answer (B): Because $919 = 7 \cdot 131 + 2$, the war lasted 131 full weeks plus 2 days. Therefore it ended 2 days beyond Thursday, which is Saturday.

答案（B）：因为 $919 = 7 \cdot 131 + 2$，战争持续了131个整周再加2天。因此，它在星期四之后再过2天结束，也就是星期六。

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