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present ages cost of 3 pencils is equal to the cost of 1 pen and cost of 2 pens, 6 pencils and 1 book is \( \geqslant 89 \) and \( = \) the cost of 1 pen, 18 pencis and 5 books is \( ¥ 367 \) Find the cost of 3 pens, 3 pencils and 1 book

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