John makes $50 a week from his job. He earns a raise andnow makes $90 a week. What is the % increase?	Choices: A) 15% B) 16.66% C) 17.8% D) 80% E) 21%
Increase = (40/50)*100 = (4/5)*100= 
<gadget id="calculator">(4/5)*100</gadget>
<output>80</output>
80%.   80%
<result>D</result>
John makes $50 a week from his job. He earns a raise andnow makes $90 a week. What is the % increase?