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Strike441 [17]
3 years ago
14

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

Mathematics
2 answers:
Margarita [4]3 years ago
6 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
Evgesh-ka [11]3 years ago
4 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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