To evaluate 16^3/2 find

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Whats the name of the vertical axis

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?