Find X's monthly income if the combined income of X and Y amounts to Rs. 36,000, and both X and Y spend 75% and 80% of their incomes, respectively, with their savings being equal.
We can say that, Let monthly income of X and Y be Rs.'a' and Rs.'b' respectively. Savings of X and Y is 25% and 20% respectively. ATQ, 0.25a = 0.2b (a/b) = (0.2/0.25) = 0.8 a = 0.8b And, a + b = 36000 a + (a/0.8) = 36000 a + 1.25a = 36000 2.25a = 36000 a = Rs.16000
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