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28 December, 17:18

Both ABC and 3D8 are three digit numbers such that ABC - 3D8 = 269. If 3D8 is divisible by 9, what number does ABC represent?

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  1. 28 December, 21:07
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    3D8 is divisible by 9 ⇒ sum 3+D+8 is divisible by 9

    ⇒ 11+D=18, D=18-11, D=7

    ⇒ 3D8 = 378

    abc - 378 = 269

    abc = 269+378

    abc = 647
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