A's monthly salary was ₹40000 and he used to save ₹10000 per month. His salary increased by 25% and expenditure increased by 15%. By what percent his savings increased?

55%

A's monthly salary = ₹40000

saving per month = ₹10000

Expenditure = 30000

Salary increased by 25% = 1.25*40000 = 50000

expenditure increased by 15% = 1.15*30000 = 34500

Savings = 50000-34500 = 15500

Increase in savings = 15500-10000 = 5500

% Increase = 5500*100/10000 = 55%

The correct answer is Option (3) → 55%