john makes $ 50 a week from his job. he earns a raise andnow makes $ 90 a week. what is the % increase?
Choose the correct choice.
A) 15 %
B) 16.66 %
C) 17.8 %
D) 80 %
E) 21 %
<gadget id="calculator">90 - 50</gadget>
<output>40</output>

<gadget id="calculator">40 / 50</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * 100</gadget>
<output>80</output>

<result>D</result>
john makes $ 50 a week from his job. he earns a raise andnow makes $ 90 a week. what is the % increase?
multiply(divide(subtract(90, 50), 50), const_100)
"increase = ( 40 / 50 ) * 100 = ( 4 / 5 ) * 100 = 80 % . d"