A whole number is added to 100 and the same number is subtracted from 100. The sum of the resulting numbers is-

Question: A whole number is added to 100 and the same number is subtracted from 100. The sum of the resulting numbers is-

Solution:
Let the whole number be x.

∴ (x + 100) + (100 - x)
= x + 100 + 100 - x
= 200