请看下面的问题: “一队割草的人,要把甲乙两片草地的草割掉。甲草地面积是乙草地面积的二倍。上午大家都在甲草地上工作,午后分成人数相等的两组分别在两片草地上割草。到傍晚甲革堆恰好割完,乙地还剩一小块。这一小块由 Please look at the following question: "A team of mowing people should cut the grass of the two grasslands of A and B. The area of ​​grass is twice as much as that of B grass, and in the morning we all work on grass land and divide into equal numbers in the afternoon The two groups were mowed in two grassland, and the pile was cut down in the evening, leaving a small piece