The arithmetic mean of two numbers is 53.45. One number is 36.2. Find the second number.
| August 14, 2021 | education
The arithmetic mean of two numbers x and y is equal to the half-sum of these numbers:
(x + y) / 2.
Thus, if one number is 36.2, and the second is x and their arithmetic mean is, then (36.2 + x) / 2 = 53.45. Where,
x = 2 * 53.45 – 36.2 = 106.9 – 36.2 = 73.7.
Answer: The second number is 73.7.
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