A rectangle's length is halved while its width is quadrupled. What is the area change as a percentage?
A. 25% increase
B. 50% increase
C. 50% decrease
D. 75% decrease
Answer:B
A rectangle's length is halved while its width is quadrupled. What is the area change as a percentage?
A. 25% increase B. 50% increase C. 50% decrease D. 75% decrease
Explanation: Let's say the original length is x and the original width is y.xy is the original area.x/2 is the new length.3 years is the new breadth.3 xy = x/2 x 3y/2 = new areaIncrease in percentage = 1/2 xy x 1/xy x 100 percent = 50%