The length of a rectangle is increased by 40% while its width is halved. What is the % change in area? Choose the most appropriate option:
A) 25%	B) 30%	C) 50%	D) 65%	E) 70%
The original area is L*W   The new area is 1.4L*0.5W = 0.7*L*W   1.4 *0.5= 
<gadget id="calculator">  1.4 *0.5</gadget>
<output>0.7</output>
0.7*L*W= L*W - 0.3*L*W   The area decreased by 30%.   The answer is 30%.
<result>B</result>
The length of a rectangle is increased by 40% while its width is halved. What is the % change in area?