When you ask "What number is halfway between 50 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=50 and Y=115.
To find the number halfway between 50 and 115, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 50 and 115 into our formula, we get:
(50 + 115)/2 = 82.5
Thus, the number halfway between 50 and 115 is 82.5.
To check that our answer is correct, we subtract 50 from 82.5 and subtract 82.5 from 115 and compare the two numbers:
82.5 - 50 = 32.5
115 - 82.5 = 32.5
As you can see, the halfway number is 32.5 higher than 50 and 32.5 lower than 115. Therefore, our halfway between answer of 82.5 above is correct.
Halfway Between
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Halfway Between 50 and 116
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