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:

Question

Accepted Answer

Let original length = x and original breadth = y.

Decrease in area

…

= xy -

∴ Decrease % =	❨	7	xy x	1	x 100	❩%	= 28%.
		25		xy

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