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

Question

Dana Gallegos

Mathematics

1 January, 18:36

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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Answers (2)

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Madilynn Wolf · Answer 1

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

Claire Lawrence · Answer 2

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.