请帮我用小学四年级学生能听得明白的方式讲解这道题---**Question 6:** 进入冬季,有一片牧场上的草开始枯萎,因此均匀地减少,若在这儿放牛,可以供 32 头牛吃 24 天,或者供 27 头牛吃 28 天。在这片牧场上养 ( ) 头牛,恰好吃 35 天。 **Translation:** 6. Entering winter, the grass on a pasture begins to wither, thus decreasing uniformly. If cows graze here, 32 cows can eat for 24 days, or 27 cows can eat for 28 days. On this pasture, raising ( ) cows will last exactly 35 days.

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