There are two boxes of fruit candies, both of equal weight. Use (5/11) of the total weight of the first box and (7/11) of the total weight of the second box, which box uses more fruit candies? Why?
有两箱水果糖，重量相等．用去第一箱总重量的(5/11)，用去第二箱总重量的(7/11)，哪一箱用去的水果糖多？为什么？
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