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Question 29
If the length of a rectangle is increased in the ratio 6 : 7 and its breadth is diminished in the ratio 5 : 4 then its area will be diminished in the ratio
Solution
let original length = 6l
original breadth = 5l
original area = 30 $$ l^2 $$
new length = 7l
new breadth = 4l
new area = 28 $$ l^2 $$
ratio = 30 $$ l^2 $$ : 28 $$ l^2 $$
    = 15 :14
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