If 75 percent of a class answered the first question on a certain test correctly, 65 percent answered the second question on the test correctly, and 20 percent answered neither of the questions correctly, what percent answered both correctly? Choose one:
A) 10 %
B) ( 8 ) 20 %
C) 30 %
D) 50 %
E) 60 %

Rationale: "{ total } = { first } + { second } - { both } + { neither } 100 % = 75 % + 65 % - { both } + 20 % - - > { both } = 60 % . answer : e ."
Answer: E