If the length of a rectangle is increased in the ratio 4 : 5 and its breadth is decreased in the ratio 3 : 2, then its area will be decreased in the ratio ............
Given that the length is increased in the ratio 4 : 5
Here, New length = 5
Old length = 4
Breadth is decreased in the ratio 3 : 2
Here, New breadth = 2
Old breadth = 3
New area = 5*2 = 10
Old area = 4*3 = 12
Therefore, Decrease in area = 12 :Â 10 = 6 :Â 5.
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