CBSE Class 12 Boards Maths The monthly incomes of Aryan and Babban are in the ratio 3 : 4 and th...

The monthly incomes of Aryan and Babban are in the ratio 3 : 4 and their
monthly expenditures are in the ratio 5 : 7. If each saves Rs. 15,000 per month, find their
monthly incomes using matrix method. This problem reflects which value ?

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