Question
Income of 'M' is 30% more than that of 'N'. 'M' and 'N'
save 50% and 40% of their respective incomes. If their expenditure difference is Rs. 600, what is the saving of 'M'?Solution
ATQ,
Let the income of 'N' be Rs. '100n'
Income of 'M' = 1.3 × 100n = Rs. '130n'
Expenditure of 'M' = 0.5 × 130n = Rs. '65n'
Expenditure of 'N' = 0.6 × 100n = Rs. '60n'
So, 65n - 60n = 600
Or, 5n = 600
Or, 'n' = 120
Savings of 'M' = 130n - 65n = 65n = 65 × 120 = Rs. 7,800
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