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Mathematics, 27.10.2020 16:00 haileysolis5

Ms. Wong spent $9.20 to buy a total of 18 pens and pencils. A pen costs $0.80 and a pencil costs $0.40. How many pens did Ms. Wong buy?

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Ms. Wong spent $9.20 to buy a total of 18 pens and pencils. A pen costs $0.80 and a pencil costs $0....
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