When you ask "What number is halfway between 86 and 165?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=86 and Y=165.
To find the number halfway between 86 and 165, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 86 and 165 into our formula, we get:
(86 + 165)/2 = 125.5
Thus, the number halfway between 86 and 165 is 125.5.
To check that our answer is correct, we subtract 86 from 125.5 and subtract 125.5 from 165 and compare the two numbers:
125.5 - 86 = 39.5
165 - 125.5 = 39.5
As you can see, the halfway number is 39.5 higher than 86 and 39.5 lower than 165. Therefore, our halfway between answer of 125.5 above is correct.
Halfway Between
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Halfway Between 86 and 166
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