When you ask "What number is halfway between 78 and 162?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=78 and Y=162.
To find the number halfway between 78 and 162, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 78 and 162 into our formula, we get:
(78 + 162)/2 = 120
Thus, the number halfway between 78 and 162 is 120.
To check that our answer is correct, we subtract 78 from 120 and subtract 120 from 162 and compare the two numbers:
120 - 78 = 42
162 - 120 = 42
As you can see, the halfway number is 42 higher than 78 and 42 lower than 162. Therefore, our halfway between answer of 120 above is correct.
Halfway Between
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Halfway Between 78 and 163
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