John makes $50 a week from his job. He earns a raise and now makes $80 a week. What is the % increase?  Choose the most appropriate option.
A) 16%
B) 16.66%
C) 17.9%
D) 18.12%
E) 60%
Increase = (30/50)*100 = (3/5)*100= 
<gadget id="calculator">(3/5)*100</gadget>
<output>60</output>
60%.   60%
<result>E</result>
John makes $50 a week from his job. He earns a raise and now makes $80 a week. What is the % increase?