When the price of a pressure cooker was increased by 15%, the sale of pressure cookers decreased by 15%. What was the net effect on the sales?
Choose the correct choice from the following:
A) 15% decrease
B) no effect
C) 2.25% increase
D) 2.25% decrease
E) None of these
Net effect on sale = −(common%change)2/100   = −(15)2/100= 2.25% decrease   Answer 2.25% decrease
<result>D</result>
When the price of a pressure cooker was increased by 15%, the sale of pressure cookers decreased by 15%. What was the net effect on the sales?