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hlan5841
2 năm trước
Giải toán: Một vé xem phim có giá 6 đô la. Khi có đợt giảm giá, số lượng người xem tăng 50%. Doanh thu mỗi ngày tăng 25%. Hỏi giá vé khi được giảm giá là bao nhiêu? (Giải bằng phương pháp nào ạ)( đáp án kèm giải thích).
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