Question : The length and breadth of a rectangle are increased by 8% and 5%, respectively. By how much percentage will the area of the rectangle increase?

Option 1: 13.4%

Option 2: 15.4%

Option 3: 12.4%

Option 4: 16.4%

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 : If the radius of a cylinder is increased by 25%, by how much percentage the height must be reduced, so that the volume of the cylinder remains the same.

Option 1: 36

Option 2: 56

Option 3: 64

Option 4: 46

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 radius and the height of the cone are each increased by 20%. Then the volume of the cone increases by:

Option 1: 20%

Option 2: 20.5%

Option 3: 62%

Option 4: 72.8%