Question : In the first month, the income of Mohan increased by 30%. In the second month, his income decreased by 30%. What will be the percentage increase or decrease in the income after two months?

Option 1: 15% increase

Option 2: 9% increase

Option 3: 15% decrease

Option 4: 9% decrease

Question : The ratio between monthly income and expenditure of Vaidic is 8 : 5. If his income increases by 20% and his expenditure increases by 30%, then find the percentage increase or decrease in his monthly savings.

Option 1: $5 \frac{2}{3}$% increase

Option 2: $5 \frac{2}{3}$% decrease

Option 3: $3 \frac{1}{3}$% increase

Option 4: $3 \frac{1}{3}$% decrease

Question : In the case of inferior good , the income elasticity of demand is :

Option 1: Zero.

Option 2: Negative .

Option 3: Infinite .

Option 4: Positive .

Question : Water tax is increased by 20% but its consumption is decreased by 20%. Then, the increase or decrease in the expenditure of money is:

Option 1: 5% decrease

Option 2: 4% decrease

Option 3: No change

Option 4: 4% increase

Question : The percentage change in a number when it is first decreased by 10% and then increased by 10% is:

Option 1: 0.1% increase

Option 2: 1% decrease

Option 3: 0.1% decrease

Option 4: No changes