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1·某村居民在第一年增加了n人,而在第二年又增加了300人.但也能说是居民人数在第一年增加了300%,而在第二年又增加了n%.问该村现在有居民多少人?
1. The number of residents in a village increased by n in the first year, and increased by 300 in the second year. But it can be said that the number of residents increased by 300% in the first year, and increased in the second year. %. Ask how many people in the village are residents now?