3 years ago

The average of 3 numbers is 15 two of the numbers are 7 and 10 what is the third number?

Mathematics

1 answer:

Zielflug [23.3K]3 years ago

8 0

9514 1404 393

Answer:

(b) 28

Step-by-step explanation:

The total of the 3 numbers will be 3×15 = 45. Then the third number is ...

45 -7 -10 = 28

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