When you ask "What number is halfway between 30 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=30 and Y=159.
To find the number halfway between 30 and 159, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 159 into our formula, we get:
(30 + 159)/2 = 94.5
Thus, the number halfway between 30 and 159 is 94.5.
To check that our answer is correct, we subtract 30 from 94.5 and subtract 94.5 from 159 and compare the two numbers:
94.5 - 30 = 64.5
159 - 94.5 = 64.5
As you can see, the halfway number is 64.5 higher than 30 and 64.5 lower than 159. Therefore, our halfway between answer of 94.5 above is correct.
Halfway Between
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Halfway Between 30 and 160
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