When you ask "What number is halfway between 72 and 159?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=72 and Y=159.
To find the number halfway between 72 and 159, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 159 into our formula, we get:
(72 + 159)/2 = 115.5
Thus, the number halfway between 72 and 159 is 115.5.
To check that our answer is correct, we subtract 72 from 115.5 and subtract 115.5 from 159 and compare the two numbers:
115.5 - 72 = 43.5
159 - 115.5 = 43.5
As you can see, the halfway number is 43.5 higher than 72 and 43.5 lower than 159. Therefore, our halfway between answer of 115.5 above is correct.
Halfway Between
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Halfway Between 72 and 160
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