
When you ask "What number is halfway between 30 and 185?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=185.

To find the number halfway between 30 and 185, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 185 into our formula, we get:
(30 + 185)/2 = 107.5
Thus, the number halfway between 30 and 185 is 107.5.
To check that our answer is correct, we subtract 30 from 107.5 and subtract 107.5 from 185 and compare the two numbers:
107.5 - 30 = 77.5
185 - 107.5 = 77.5
As you can see, the halfway number is 77.5 higher than 30 and 77.5 lower than 185. Therefore, our halfway between answer of 107.5 above is correct.
Halfway Between
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Halfway Between 30 and 186
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