Question : If profit is $\frac{1}{11}$th of the selling price, what is the profit percentage?

Option 1: $9\frac{1}{11}\%$

Option 2: $10\%$

Option 3: $8\frac{1}{3}\%$

Option 4: $11\frac{1}{9}\%$

Question : The base of a triangle is 16 cm and its area is 144 cm². Find its corresponding height, with respect to the given base.

Option 1: 18 cm

Option 2: 9 cm

Option 3: 24 cm

Option 4: 12 cm

Question : If the radius of a cylinder is decreased by 12%, then by how much percentage must its height be increased so that the volume of the cylinder remains the same?

Option 1: 29.13%

Option 2: 21.78%

Option 3: 42.56%

Option 4: 34.27%

Question : The radius of a circle is increased by 10%. The percentage increase in its area is:

Option 1: 10%

Option 2: 11%

Option 3: 20%

Option 4: 21%

Question : If $A=\frac{2}{3} \div \frac{4}{9}, B=\frac{6}{11} \times\frac{33}{12}$ and $C=\frac{1}{3} \times \frac{9}{2}$, then what is the value of $A \times B-C$?

Option 1: $\frac{3}{8}$

Option 2: $\frac{3}{2}$

Option 3: $\frac{3}{4}$

Option 4: $\frac{3}{16}$