Q. A man spends 30% of his salary on rent and 20% on food. If he has $2,500 left after these expenses, what is his total salary?

The correct answer is (B) $5,000.

Explanation:

Let’s solve this step by step:

1) The man spends: 30% on rent & 20% on food
Total spending = 30% + 20% = 50% of salary

2) After these expenses (50%), he has $2,500 left
This $2,500 represents the remaining 50% of his salary

3) If $2,500 = 50% of salary
Then 100% (total salary) = $2,500 × (100/50)
Total salary = $2,500 × 2 = $5,000

The answer is (B) $5,000.