Question : The growth rate of population refers to the:

Option 1: Difference between birth rate and GDP

Option 2: Addition of birth rate and death rate

Option 3: Difference between birth rate and death rate

Option 4: Difference between death rate and GDP

Question : A number is increased by 20% and then the increased number is decreased by 20%. The net increase or decrease is:

Option 1: Decrease 2%

Option 2: Increase 4%

Option 3: Increase 2%

Option 4: Decrease 4%

Question : A number is increased by 30% and then the increased number is decreased by 30%. The net increase or decrease is:

Option 1: 12% increase

Option 2: 9% decrease

Option 3: 15% decrease

Option 4: 30% increase

Question : A number is increased by 5% and then the increased number is decreased by 5%. What is the net increase or decrease per cent?

Option 1: 0.25% decrease

Option 2: 0.75% increase

Option 3: 1% increase

Option 4: 0.50% decrease

Question : If the price of a washing machine is first increased by 25% and then decreased by 25%, then the net change in price will be a _____.

Option 1: 6.5% increase

Option 2: 6.5% decrease

Option 3: 6.25% decrease

Option 4: 6.25% increase