Question
Abi spent 34 of her money on 15 pens and 7 pencils. The cost of each pencil is 3 times the cost of each pen. She bought some more pens with 12 of her remaining money. How many pens did Abi buy altogether?
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Abi spent 34 of her money on 15 pens and 7 pencils. The cost of each pencil is 3 times the cost of each pen. She bought some more pens with 12 of her remaining money. How many pens did Abi buy altogether?