Correct Answer - Option 3 : 8%
Given:
A man spends 45% of his income on food, 35% on children's education and 60% of the remaining on house rent
Calculation:
Let the total income be 100x.
Spend on food = 100x × 45/100 = 45x
Spend on children's education = 100 × 35/100 = 35x
Total speed amount = 45x + 35x = 80x
Remaining amount = 100x – 80x = 20x
Spend on house rent = 20x × 60/100 = 12x
Saving = 20x – 12x = 8x
Saving % = (8x/100x) × 100 = 8%
∴ The required saving % is 8%