When you ask "What number is halfway between 30 and 174?" 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=174.
To find the number halfway between 30 and 174, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 174 into our formula, we get:
(30 + 174)/2 = 102
Thus, the number halfway between 30 and 174 is 102.
To check that our answer is correct, we subtract 30 from 102 and subtract 102 from 174 and compare the two numbers:
102 - 30 = 72
174 - 102 = 72
As you can see, the halfway number is 72 higher than 30 and 72 lower than 174. Therefore, our halfway between answer of 102 above is correct.
Halfway Between
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Halfway Between 30 and 175
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