Question
A book shop sells either one pencil for $3 or in packs of 5 for $10. Xandra wants to buy exactly 27 pencils with the smallest amount of money. How much does she have to pay for the 27 pencils?
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A book shop sells either one pencil for $3 or in packs of 5 for $10. Xandra wants to buy exactly 27 pencils with the smallest amount of money. How much does she have to pay for the 27 pencils?