Arithmetic Ability
Area

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Q.

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:

View Answer

Correct choice: B

Explanation:

Let original length = x and original breadth = y. Decrease in area = xy - (80100x×90100y. = (7/25)xy Decrease % = (7/25)xy * (1/xy) * 100 = 28%
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