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:
ক) 10%
খ) 10.8%
গ) 20%
ঘ) 28%
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খ) 88
গ) 84
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ক) 151
খ) 135
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ক) 20, 36, 16
খ) 37, 1, 1
গ) 10, 18, 8
ঘ) 25, 10, 7
ক) 2 : 1
খ) 11 : 12
গ) 3 : 4
ঘ) 4 : 3
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