If the area of a rectangular plot increase by 30% while its breadth remains same what will be the ratio of the areas of new and old figures ?
Let original length = `x` and original breadth = y.
Then original area = `xy`
New length = `130/100 x = (13x)/(10)`
New breadth = y, new area = `((13x)/(10) xx y) = (13xy)/(10)`
`:.` Required ratio = `(((13xy)/(10))/(xy)) = 13/10` = 13 : 10.
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