Answer:
12.5
Explanation:
To find the average of two numbers: (n₁ + n₂)/2, where n₁ and n₂ are the numbers to find the average of.
Plug in: (12 + 13)/2
Add: 25/2
Divide: 12.5
Average = (numbers added together)/ number of numbers
=(12+13)/ (2)
=25/2
=12.5
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