Halfway Between 30 and 139

When you ask "What number is halfway between 30 and 139?" 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=139.

Halfway Between Line

To find the number halfway between 30 and 139, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 30 and 139 into our formula, we get:

(30 + 139)/2 = 84.5

Thus, the number halfway between 30 and 139 is 84.5.

To check that our answer is correct, we subtract 30 from 84.5 and subtract 84.5 from 139 and compare the two numbers:

84.5 - 30 = 54.5
139 - 84.5 = 54.5

As you can see, the halfway number is 54.5 higher than 30 and 54.5 lower than 139. Therefore, our halfway between answer of 84.5 above is correct.

Halfway Between
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Halfway Between 30 and 140
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