Question

a number is increased by 25%, and the resulting number is then decreased by 20%. The final number is what percent of the original number?

Answer 1

The final number is 100% of, or the same as the original number 

Ex: original number = 1
      1(.25) = .25     1 + .25 = 1.25
     1.25(.20) = .25      1.25 - .25 = 1