A towel, when bleached, lost 20% of its length and 10% of its breadth. What is the percentage decrease in area?  Choose the correct answer
A) 26  B) 28  C) 24  D) 20  E) 22
Formula for percentage change in area is:   =(−x−y+(xy)/100)%   =(−20−10+(20×10)/100)%=−28%   i.e., area is decreased by 28%   Answer is 28.
<result>B</result>
A towel, when bleached, lost 20% of its length and 10% of its breadth. What is the percentage decrease in area?