Discussion

Explanation:

Let the monthly salaries of A and B be Rs. 2x and Rs. 3x respectively. 

Let the monthly expenditures of A and B be Rs. 3y and Rs. 4y respectively.

Ratio of the monthly savings of A and B = 2x-3y3x-4y=2xy-33xy-4.

As x/y is unknown, the ratio cannot be found

Hence, option (d).

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