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long7.1nqdg
2 năm trước
a,b,c,d mua một kẹo từ cửa tạp hóa số kẹo a mua= 1/3 tổng số kẹo b,c,d mua. Số kẹo B mua=25% tổng kẹo mà a ,c,d mua số kẹo c mua = 2/5 a,b,d mua D mua ít hơn C 3 viên kẹo hỏi tổng cộng bốn bạn đã mua bao nhiêu?
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