SSC CHSL Model Paper 12

Question : 65 of 100

Marks: +1, -0

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:

Solution:

Percentage of decrease in area

={lb-0.8l×9b}/{lb}×100

= (1-0 .7 2 )×10 0 = 28

Decrease in area = 28%

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