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19 February, 16:15

The mean of three numbers is 70. if two of the numbers are 55 and 65 what is the third number

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  1. 19 February, 17:17
    0
    90

    55+65=120

    there are 3 numbers and when you divide them it makes 70.

    70 x 3 = 210

    210 - 120 = 90

    55 + 65 + 90 = 210

    210 / 3 = 70
  2. 19 February, 17:18
    0
    I thin the third number would be 90 because if the mean of 3 numbers is 70 then multiply 70 an three and you get 210. Then add 55 and 65 and you get 120. Then do 210-120 and you get 90 so 90 is the third number.
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