When you ask "What number is halfway between 40 and 285?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=40 and Y=285.
To find the number halfway between 40 and 285, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 40 and 285 into our formula, we get:
(40 + 285)/2 = 162.5
Thus, the number halfway between 40 and 285 is 162.5.
To check that our answer is correct, we subtract 40 from 162.5 and subtract 162.5 from 285 and compare the two numbers:
162.5 - 40 = 122.5
285 - 162.5 = 122.5
As you can see, the halfway number is 122.5 higher than 40 and 122.5 lower than 285. Therefore, our halfway between answer of 162.5 above is correct.
Halfway Between
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Halfway Between 40 and 286
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