John makes $40 a week from his job. He earns a raise and now makes $80 a week. What is the % increase? Choose the most appropriate option:
A) 16 % B) 16.66 % C) 17.9 % D) 18.12 % E) 100 %

Rationale: increase = ( 40 / 40 ) * 100 = ( 1 ) * 100 = 100 % . e
Answer: E