Question

Suppose an amount increases by 100%, then decreases by 100%. Find the final amount. Would the situation change if the original increase was 150%? Explain your reasoning. WILL GIVE MEDAL

Answer 1

if an amount increases by 100% , it doubles, it if decreases by 100% then it halves

Answer 2

so if you start with say 2.
increase by 100%
that doubles it to make 4.
then decrease by 100%
that halves it so then it becomes 2 . you are back to your original number