The salary of a worker is first increased by 30% and afterwards reduced by 30%. What is net change in his salary?	Choose the correct choice:	A) 7%	B) 5%	C) 9%	D) 1%	E) 3%
(30 * 30)/100= 
<gadget id="calculator">(30 * 30)/100</gadget>
<output>9</output>
9% decrease   Answer:9%
<result>C</result>
The salary of a worker is first increased by 30% and afterwards reduced by 30%. What is net change in his salary?