Question

If quantity increases by 25% and then decreases by 25% will the result be the original quantity? Explain.

Answer 1

Let's try to be able to know the answer:
=> Let's have 10 as the value
Increase by 25%
=> 10 + 25%
=> 10 * .25 = 2.5
=> 10 + 2.5 = 12.5 the new value
Now, decrease this by 25%
=> 12.5 - 25%
=> 12.5 * .25 = 3.125
=> 12.5
- 3.125 = 9.375 or 9.4
Thus, the given statement is false, the result will not be the original quantity.

(I showed more work rather than explaining more, hope it still helps)