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A,B and C invested capital in ratio 5 : ...

A,B and C invested capital in ratio 5 : 7 : 4, the time of their investment being in the ratio x : y : z . If their profits are in the ratio 45 : 42 : 28, then x : y : z =?
A, B और C ने 5: 7: 4 के अनुपात में पूँजी लगाई, उनके निवेश का समय x: y: z के अनुपात में है। यदि उनका लाभ 45: 42: 28 के अनुपात में है, तो x: y: z=?

A

`9 : 6 : 7`

B

` 6 : 7 : 9 `

C

` 9 : 4 : 7 `

D

`7 : 9 : 4 `

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