The profits of QRS company rose 50% from March to April, then dropped 20% from April to May, then rose 50% from May to June. What was the percent increase for the whole quarter, from March to June?	Choose the correct choice.
A) 15 %
B) 32 %
C) 40 %
D) 62 %
E) 80 %

Rationale: "assume 100 in march , then 150 in april as 50 % increase , then 120 in may as 20 % decrease from april , and then 180 in june which is 150 % of 120 . so overall increase is from 100 to 180 is 80 % answer e"
Answer: E