When you ask "What number is halfway between 15 and 168?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=168.
To find the number halfway between 15 and 168, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 168 into our formula, we get:
(15 + 168)/2 = 91.5
Thus, the number halfway between 15 and 168 is 91.5.
To check that our answer is correct, we subtract 15 from 91.5 and subtract 91.5 from 168 and compare the two numbers:
91.5 - 15 = 76.5
168 - 91.5 = 76.5
As you can see, the halfway number is 76.5 higher than 15 and 76.5 lower than 168. Therefore, our halfway between answer of 91.5 above is correct.
Halfway Between
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Halfway Between 15 and 169
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