Halfway Between 20 and 255

When you ask "What number is halfway between 20 and 255?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=20 and Y=255.

Halfway Between Line

To find the number halfway between 20 and 255, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 20 and 255 into our formula, we get:

(20 + 255)/2 = 137.5

Thus, the number halfway between 20 and 255 is 137.5.

To check that our answer is correct, we subtract 20 from 137.5 and subtract 137.5 from 255 and compare the two numbers:

137.5 - 20 = 117.5
255 - 137.5 = 117.5

As you can see, the halfway number is 117.5 higher than 20 and 117.5 lower than 255. Therefore, our halfway between answer of 137.5 above is correct.

Halfway Between
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Halfway Between 20 and 256
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