When you ask "What number is halfway between 50 and 172?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=50 and Y=172.
To find the number halfway between 50 and 172, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 50 and 172 into our formula, we get:
(50 + 172)/2 = 111
Thus, the number halfway between 50 and 172 is 111.
To check that our answer is correct, we subtract 50 from 111 and subtract 111 from 172 and compare the two numbers:
111 - 50 = 61
172 - 111 = 61
As you can see, the halfway number is 61 higher than 50 and 61 lower than 172. Therefore, our halfway between answer of 111 above is correct.
Halfway Between
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Halfway Between 50 and 173
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