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Mathematics, 01.06.2021 15:50 kifeak2002

mr ong bought a total of 156 pens and pencils. the ratio of number of pens to the number of pencils he bought was 4:9. each pen cost 2 dollars. how much did mr ong pay for the pens​

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mr ong bought a total of 156 pens and pencils. the ratio of number of pens to the number of pencils...

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