After spending 20% of his salary on grocery and 30% of the remainder on monthly house rent, a man is left with ₹8,400. What is his monthly salary?

₹15,000

Let Salary of Men = 100x

Expenditure on Grocery = 20% of 100x = 20x

Remaining = 100x - 20x = 80x

Expenditure on house rent = 30% of 80x = 24x

According to question ,

100x - 20x - 24x = 56x

56x = 8400

x = 150

Salary of Men = 100 × 150 = 15000