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3 September, 22:21

I am a 3digit number that is less than 500. My ones digit is twice the hundreds digit. The sum of the three digits is 14. What number am I?

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Answers (2)
  1. 4 September, 00:39
    0
    Ooh fun

    so xyz=number

    z=2x

    x+y+z=14

    subsitute z=2x into x+y+z=14

    x+y + (2x) = 14

    3x+y=14

    number must be 3 digit and less thaan 500

    since the tens digit's max is 9 then

    z+x≥14-9

    z=2x

    3x≥5

    x max=5 because 500 is max so

    x could be 2,3,4 so

    284

    356

    428

    are the numbers
  2. 4 September, 00:50
    0
    The three possible answers are 428, 356, and 284. All are less than 500, all have a units digit twice the hundreds digit, and all have 14 as a sum of digits.
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