Trong kì thi định kì cuối năm vừa qua của một trường Tiểu học có 70,5% số học sinh đạt điểm khá giỏi môn Toán, 64,5% số học sinh đạt điểm khá giỏi môn Tiếng Việt; 18% số học sinh ko đạt điểm khá giỏi môn Toán và Tiếng Việt. Hãy tìm tỉ số % số phần trăm số học sinh đạt điểm khá giỏ môn Toán và Tiếng Việt.

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