When you ask "What number is halfway between 68 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=68 and Y=255.
To find the number halfway between 68 and 255, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 255 into our formula, we get:
(68 + 255)/2 = 161.5
Thus, the number halfway between 68 and 255 is 161.5.
To check that our answer is correct, we subtract 68 from 161.5 and subtract 161.5 from 255 and compare the two numbers:
161.5 - 68 = 93.5
255 - 161.5 = 93.5
As you can see, the halfway number is 93.5 higher than 68 and 93.5 lower than 255. Therefore, our halfway between answer of 161.5 above is correct.
Halfway Between
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Halfway Between 68 and 256
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