John makes $55 a week from his job. He earns a raise andnow makes $60 a week. What is the % increase?
Answers.
A) 16 % B) 9.66 % C) 9.09 % D) 9.98 % E) 17 %

Rationale: "increase = ( 5 / 55 ) * 100 = ( 1 / 11 ) * 100 = 9.09 % . c"
Answer: C