A spends 30% of his monthly income on rent, 25% of the remaining income on food, 20% of the remaining income on traveling, and saves the rest. If the total monthly saving of B is Rs. 2520, then find the monthly income of A (in Rs).
Let the total monthly income of A be Rs 100a
Amount spend on rent = 30% of 100a=30a
Amount spend on food = 25% of (100a-30a)=17.5a
Amount spend on travelling =20% of (100a-30a-17.5a)=10.5a
Amount he saved = (100a-30a-17.5a-10.5a)=42a
ATQ, 42a=2520
a=60
Required answer = 60×100=Rs 6000
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