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If the length of a rectangle is increase...

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.
यदि किसी आयत की लम्बाई में 6: 7 के अनुपात में वृद्धि तथा उसकी चौड़ाई में 5 : 4 के अनुपात में कमी हो जाये, तो उसके क्षेत्रफल में किस अनुपात में कमी हो जायेगी?

A

`17 : 18`

B

` 15: 14`

C

`9:8 `

D

`8:7`

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