When you ask "What number is halfway between 28 and 173?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=28 and Y=173.
To find the number halfway between 28 and 173, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 28 and 173 into our formula, we get:
(28 + 173)/2 = 100.5
Thus, the number halfway between 28 and 173 is 100.5.
To check that our answer is correct, we subtract 28 from 100.5 and subtract 100.5 from 173 and compare the two numbers:
100.5 - 28 = 72.5
173 - 100.5 = 72.5
As you can see, the halfway number is 72.5 higher than 28 and 72.5 lower than 173. Therefore, our halfway between answer of 100.5 above is correct.
Halfway Between
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Halfway Between 28 and 174
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