Question
Mr. Gan wants to buy the same type of pens. If he buys 5 pens, he will have $5 left. If he buys 10 pens, he will be short of $8.50. How much do 5 pens cost?
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Mr. Gan wants to buy the same type of pens. If he buys 5 pens, he will have $5 left. If he buys 10 pens, he will be short of $8.50. How much do 5 pens cost?