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Mathematics, 10.03.2021 19:20 Legoman29305

The cost of posting one inland letter is 5k and one overseas letter is 10k. A
messenger spent #1.20 in posting 4
overseas letters and some inland
letters. How many inland letters did
he post?​

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The cost of posting one inland letter is 5k and one overseas letter is 10k. A
messenger spent...
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