When you ask "What number is halfway between 42 and 161?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=161.
To find the number halfway between 42 and 161, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 161 into our formula, we get:
(42 + 161)/2 = 101.5
Thus, the number halfway between 42 and 161 is 101.5.
To check that our answer is correct, we subtract 42 from 101.5 and subtract 101.5 from 161 and compare the two numbers:
101.5 - 42 = 59.5
161 - 101.5 = 59.5
As you can see, the halfway number is 59.5 higher than 42 and 59.5 lower than 161. Therefore, our halfway between answer of 101.5 above is correct.
Halfway Between
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Halfway Between 42 and 162
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