John makes $60 a week from his job. He earns a raise andnow makes $70 a week. What is the % increase? Choose the correct choice from the following answers:
A) 16 %
B) 16.66 %
C) 17 %
D) 17.2 %
E) 18 %

Rationale: "increase = ( 10 / 60 ) * 100 = ( 1 / 6 ) * 100 = 16.66 % . b"
Answer: B