
When you ask "What number is halfway between 39 and 288?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=39 and Y=288.

To find the number halfway between 39 and 288, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 39 and 288 into our formula, we get:
(39 + 288)/2 = 163.5
Thus, the number halfway between 39 and 288 is 163.5.
To check that our answer is correct, we subtract 39 from 163.5 and subtract 163.5 from 288 and compare the two numbers:
163.5 - 39 = 124.5
288 - 163.5 = 124.5
As you can see, the halfway number is 124.5 higher than 39 and 124.5 lower than 288. Therefore, our halfway between answer of 163.5 above is correct.
Halfway Between
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Halfway Between 39 and 289
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