When you ask "What number is halfway between 77 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=77 and Y=162.
To find the number halfway between 77 and 162, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 162 into our formula, we get:
(77 + 162)/2 = 119.5
Thus, the number halfway between 77 and 162 is 119.5.
To check that our answer is correct, we subtract 77 from 119.5 and subtract 119.5 from 162 and compare the two numbers:
119.5 - 77 = 42.5
162 - 119.5 = 42.5
As you can see, the halfway number is 42.5 higher than 77 and 42.5 lower than 162. Therefore, our halfway between answer of 119.5 above is correct.
Halfway Between
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Halfway Between 77 and 163
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