
When you ask "What number is halfway between 15 and 292?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=292.

To find the number halfway between 15 and 292, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 292 into our formula, we get:
(15 + 292)/2 = 153.5
Thus, the number halfway between 15 and 292 is 153.5.
To check that our answer is correct, we subtract 15 from 153.5 and subtract 153.5 from 292 and compare the two numbers:
153.5 - 15 = 138.5
292 - 153.5 = 138.5
As you can see, the halfway number is 138.5 higher than 15 and 138.5 lower than 292. Therefore, our halfway between answer of 153.5 above is correct.
Halfway Between
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Halfway Between 15 and 293
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