17. [tex]\frac{7}{40}[/tex]
18. [tex]\frac{10}{16}[/tex]
19. [tex]\square[/tex]
20. [tex]\frac{5}{6}[/tex]
21. [tex]\frac{8}{12}[/tex]
22. [tex]2 \frac{1}{3}[/tex]
23. [tex]\frac{10}{24}[/tex]
24. [tex]\frac{4}{15}[/tex]
25. [tex]1 \frac{8}{9}[/tex]

26. A hockey team has won 28 out of the 32 games they have played so far this season. What percent of the games have they won?

27. Of the 150 students in the marching band, 18 play the clarinet. What percent of the students in the band play the clarinet?

To solve the problem, there are two separate parts we need to calculate:

1. Percent of students in the marching band who play the clarinet:

- There are 150 students in total in the marching band.
- Out of these, 18 students play the clarinet.

To find the percentage of students who play the clarinet, you follow these steps:

- Divide the number of clarinet players by the total number of students:
[tex]$\frac{18}{150}$[/tex]

- Then, multiply the result by 100 to convert it into a percentage:
[tex]$\left(\frac{18}{150}\right) \times 100 = 12\%$[/tex]

So, 12% of the students in the marching band play the clarinet.

2. Percent of games the hockey team has won:

- The hockey team has played a total of 32 games.
- They have won 28 of these games.

To find the percentage of games they have won, you do the following:

- Divide the number of games won by the total number of games played:
[tex]$\frac{28}{32}$[/tex]

- Multiply the result by 100 to convert it into a percentage:
[tex]$\left(\frac{28}{32}\right) \times 100 = 87.5\%$[/tex]

Therefore, the hockey team has won 87.5% of their games.

These calculations give us the percentages for each part of the problem.