题目

In 2011, it cost Tammy $1.30 to manufacture each copy of her magazine, which she sold for $2.30. In 2012, it cost Tammy $1.50 to manufacture each copy of the same magazine, which she sold for $3.00.


Quantity A

The percent by which Tammy’s profit per copy of the magazine changed from 2011 to 2012.

Quantity B

选项

A.

Quantity A is greater.


B.

Quantity B is greater.


C.

The two quantities are equal.


D.

The relationship cannot be determined from the information given.

解析

2011年,制造价格为1.30美元;2011年,销售价格为2.30美元。2012年,制造成本为1.50美元;2012年,销售价格为3.00美元。2011年每件利润为1美元;2012年每件利润为1.50美元。百分比变化为(0.5/1)×100=50%。因此,A量更大。
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