When you ask "What number is halfway between 91 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=91 and Y=115.
To find the number halfway between 91 and 115, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 91 and 115 into our formula, we get:
(91 + 115)/2 = 103
Thus, the number halfway between 91 and 115 is 103.
To check that our answer is correct, we subtract 91 from 103 and subtract 103 from 115 and compare the two numbers:
103 - 91 = 12
115 - 103 = 12
As you can see, the halfway number is 12 higher than 91 and 12 lower than 115. Therefore, our halfway between answer of 103 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 91 and 116
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