John makes $60 a week from his job. He earns a raise and now makes $80 a week. What is the % increase?
Choose the correct choice from the following choices:
A) 15 %
B) 33.33 %
C) 17.8 %
D) 19 %
E) 21 %

Rationale: "increase = ( 20 / 60 ) * 100 = ( 1 / 3 ) * 100 = 33.33 % . b"
Answer: B