if 1500 is increased by 20 % , and then reduced by y % , yielding 1080 , what is y ?  Select the correct option
A) 20 %  B) 40 %  C) 60 %  D) 80 %  E) 100 %

Rationale: soln : - 1,500 * 1.2 = 1,800 . 1,800 ( 1 - y / 100 ) = 1,080 - - > ( 1 - y / 100 ) = 0.6 - - > y = 40 % . answer : b
Answer: B