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The ratio of the monthly income of X and...

The ratio of the monthly income of X and Y is 5 : 4 and that of their monthly expenditure is 9 : 7 . If the income of Y is equal to the expenditure of X, then what is the ratio of the saving of X and Y?
X और Y की मासिक आय का अनुपात 5: 4 है और उनके मासिक खर्च का अनुपात 9: 7 है। यदि Y की आय X के व्यय के बराबर है, तो X और Y की बचत का अनुपात कया है?

A

`6 : 7`

B

`8 : 9`

C

`7 : 6`

D

`9 : 8`

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