GWD 2-37

xdrertty

Q37

One gram of a certain health food contains 7 percent of the minimum daily requirement of Vitamin E and 3 percent of the minimum daily requirement of vitamin A. If vitamins E and A are to be obtained from no other source, approximately how many grams of the health food must be eaten daily to provide at least the minimum daily requirement of both vitamins.?

A.3 B.7 C.10 D.14 E 33

Key E ?

I don't understand the Question. Would you please interpret it for me? Many thanks!

himba

一克某健康食物里包含7%的每日所必需的维生素E,3%的每日所需的维生素A,如果维生素A,E没有其他的来源，每天大概需要吃多少克这种健康食物才能提供足够的每日所需的两种维生素？

因为只有这一种来源，所以1g里有3%必备A，所以33g里正好有100%必备（其中包含E,231%必备),但如果刚好符合E必备的条件，A还不够100%，所以不行。

xdrertty

以下是引用himba在2004-11-28 7:39:00的发言：

一克某健康食物里包含7%的每日所必需的维生素E,3%的每日所需的维生素A,如果维生素A,E没有其他的来源，每天大概需要吃多少克这种健康食物才能提供足够的每日所需的两种维生素？

因为只有这一种来源，所以1g里有3%必备A，所以33g里正好有100%必备（其中包含E,231%必备),但如果刚好符合E必备的条件，A还不够100%，所以不行。

thanks for consuming your time! u'r appreciated!