Question

Kamlesh used to spend 80% of his salary. When his salary increased by 40%, his expenses also increased by 45% of his earlier expenses. How much percentage of his salary does he save now?

• A. 16.8%
• B. 16.24%
• C. 17.14%
• D. 18.34%

Answer 1

The correct option is C 17.14%

We can solve this by either considering the salary of Kamlesh as x or ₹100 , since we are finding %.
Let us consider his salary to be ₹100.
Expenditure = 80% = $\frac{80}{100}\times 100$ = ₹80
Increase in salary = 40% = $\frac{40}{100}\times 100$ = ₹40
New salary = ₹100 + ₹40 = ₹140
Increase in expenditure = 45% = $\frac{45}{100}\times 80$ = ₹36
New expenditure = ₹80 + ₹36 = ₹116
New savings = ₹140 - ₹116 = ₹24
Savings % = $\frac{24}{140}\times 100$ = 17.14%