A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth.The percentage of decrease in area is :	Choose the correct choice from the following options
A) 13% B) 14% C) 18% D) 20% E) 28%
Let original length =x and original breadth =y.   Decrease in area =xy-(80/100*x*90/100*y)=(xy-18/25*xy)=7/25*xy.   Decrease% = (7/25*xy*1/xy*100)%=28%.   Answer is 28%
<result>E</result>
A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth.The percentage of decrease in area is :