Question
Mr. Ang wants to buy the same type of notebooks. If he buys 7 notebooks, he will have $4 left. If he buys 9 notebooks, he will be short of $8.20. How much do 7 notebooks cost?
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Mr. Ang wants to buy the same type of notebooks. If he buys 7 notebooks, he will have $4 left. If he buys 9 notebooks, he will be short of $8.20. How much do 7 notebooks cost?