Shalini spends 60% of her salary. If her salary is increased by 40% and her expenditure is also increased by 30%, find the percentage increment or decrement in her savings.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 55% increment.
Let original salary = 100
Expenditure = 60 and Savings = 40
New salary = 140
New expenditure = 60 × (130/100) = 78
New savings = 140 - 78 = 62
Savings increase = 62 - 40 = 22
Increment percentage = (22/40) × 100 = 55%