John makes $50 a week from his job. He earns a raise and now makes $70 a week. What is the % increase?	Choose the correct choice from the following answers:
A) 16%
B) 16.66%
C) 18%
D) 21%
E) 40%
Increase = (20/50)*100= 
<gadget id="calculator">(20/50)*100</gadget>
<output>40</output>
40%.   40%
<result>E</result>
John makes $50 a week from his job. He earns a raise and now makes $70 a week. What is the % increase?