When you ask "What number is halfway between 30 and 165?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=165.
To find the number halfway between 30 and 165, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 165 into our formula, we get:
(30 + 165)/2 = 97.5
Thus, the number halfway between 30 and 165 is 97.5.
To check that our answer is correct, we subtract 30 from 97.5 and subtract 97.5 from 165 and compare the two numbers:
97.5 - 30 = 67.5
165 - 97.5 = 67.5
As you can see, the halfway number is 67.5 higher than 30 and 67.5 lower than 165. Therefore, our halfway between answer of 97.5 above is correct.
Halfway Between
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Halfway Between 30 and 166
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