求助数学陈向东一道...

RBY

Candy hearts were marked down from 30% to 50% on Valentine's Day. The following day, candy hearts were marked down an additional 25%.What was the lowest cost of a candy heart that originally sold for $28?

A $7 B $12.60  C$14  D $15.4  E $21

答案是A。

数学太差，算了一半天，也没凑出答案来。哪位帮我解答一下，不胜感激！！

RBY

自己顶一下。

parris

这题的意思是价格从25%降到75%，所以价格是原价的25%。所以是7

biglin1987

原价是28.

Valentine's Day那天降价from 30% to 50%，也就是最多降50%。

之后又降了25%。

所以一共降了75%，剩原价的25%，就是7。

lz的答案没问题的话只能这么理解了。