When you ask "What number is halfway between 25 and 115?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=25 and Y=115.
To find the number halfway between 25 and 115, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 25 and 115 into our formula, we get:
(25 + 115)/2 = 70
Thus, the number halfway between 25 and 115 is 70.
To check that our answer is correct, we subtract 25 from 70 and subtract 70 from 115 and compare the two numbers:
70 - 25 = 45
115 - 70 = 45
As you can see, the halfway number is 45 higher than 25 and 45 lower than 115. Therefore, our halfway between answer of 70 above is correct.
Halfway Between
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Halfway Between 25 and 116
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