Khi mới nhận lớp 8A, cô giáo chủ nhiệm dự định chia lớp thành ba tổ có số học sinh như nhau. Nhưng sau đó lớp nhận thêm 4 học sinh nữa do đó cô chủ nhiệm đã chia đều số học sinh cả lớp thành bốn tổ. Hỏi lớp 8A hiện có bao nhiêu học sinh. Biết rằng so với phương án dự định ban đầu số học sinh hiện nay của mỗi tổ ít hơn 2 học sinh.

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