When you ask "What number is halfway between 49 and 686?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=49 and Y=686.
To find the number halfway between 49 and 686, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 686 into our formula, we get:
(49 + 686)/2 = 367.5
Thus, the number halfway between 49 and 686 is 367.5.
To check that our answer is correct, we subtract 49 from 367.5 and subtract 367.5 from 686 and compare the two numbers:
367.5 - 49 = 318.5
686 - 367.5 = 318.5
As you can see, the halfway number is 318.5 higher than 49 and 318.5 lower than 686. Therefore, our halfway between answer of 367.5 above is correct.
Halfway Between
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Halfway Between 49 and 687
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