When you ask "What number is halfway between 85 and 242?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=85 and Y=242.
To find the number halfway between 85 and 242, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 85 and 242 into our formula, we get:
(85 + 242)/2 = 163.5
Thus, the number halfway between 85 and 242 is 163.5.
To check that our answer is correct, we subtract 85 from 163.5 and subtract 163.5 from 242 and compare the two numbers:
163.5 - 85 = 78.5
242 - 163.5 = 78.5
As you can see, the halfway number is 78.5 higher than 85 and 78.5 lower than 242. Therefore, our halfway between answer of 163.5 above is correct.
Halfway Between
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Halfway Between 85 and 243
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