Halfway Between 40 and 139

When you ask "What number is halfway between 40 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=40 and Y=139.

Halfway Between Line

To find the number halfway between 40 and 139, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 40 and 139 into our formula, we get:

(40 + 139)/2 = 89.5

Thus, the number halfway between 40 and 139 is 89.5.

To check that our answer is correct, we subtract 40 from 89.5 and subtract 89.5 from 139 and compare the two numbers:

89.5 - 40 = 49.5
139 - 89.5 = 49.5

As you can see, the halfway number is 49.5 higher than 40 and 49.5 lower than 139. Therefore, our halfway between answer of 89.5 above is correct.

Halfway Between
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Halfway Between 40 and 140
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