Question : If the ratio of the altitudes of two triangles is 3 : 4 and the ratio of their corresponding areas is 4 : 3, then the ratio of their corresponding lengths of bases is:

Option 1: 1 : 1

Option 2: 16 : 9

Option 3: 1 : 2

Option 4: 2 : 1

Question : The average of nine consecutive numbers is $n$, if the next two numbers are also included the new average will be:

Option 1: increase by 2

Option 2: remain the same

Option 3: increase by 1.5

Option 4: increase by 1