When you ask "What number is halfway between 72 and 161?" 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=161.
To find the number halfway between 72 and 161, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 161 into our formula, we get:
(72 + 161)/2 = 116.5
Thus, the number halfway between 72 and 161 is 116.5.
To check that our answer is correct, we subtract 72 from 116.5 and subtract 116.5 from 161 and compare the two numbers:
116.5 - 72 = 44.5
161 - 116.5 = 44.5
As you can see, the halfway number is 44.5 higher than 72 and 44.5 lower than 161. Therefore, our halfway between answer of 116.5 above is correct.
Halfway Between
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Halfway Between 72 and 162
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