A man spends ₹$78,000$ per month from his salary. He saves $40\%$ of his salary. What is his salary (in ₹) for the whole year?

Let the monthly salary of the man be $x$.Given:Savings = $40\%$ of the salaryTherefore, Expenditure = $100\%-40\%=60\%$ of the salaryWe are given that his monthly expenditure is ₹$78,000$:
$$60\%\text{ of }x=78000$$
$$\frac{60}{100}\times x=78000$$
$$x=\frac{78000\times 100}{60}$$
$$x=1300\times 100=1,30,000$$
So, his monthly salary is ₹$1,30,000$.Now, we need to calculate his annual salary (for $12$ months):
$$\text{Annual Salary}=1,30,000\times 12=15,60,000$$