Số tiền mẹ cho bạn Nam là: $6.12000+30000=372000$
Số tiền mà Nam mua sách và vở khi giảm giá là: $6.12000.\frac{90}{100}+300000.\frac{88}{100}=328800$
Số tiền dư là: $372000-328800=43200>42000$
=> đủ tiền mua hộp bút

Bạn cần đăng nhập để có thể gửi đáp án

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