Answer: 13 players.
Step-by-step explanation:
1. Let's call:
: Price of the shirt (
)
: Price of socks 
: number of players.
2. You know that the budget is $300 and you have the following formula given in the problem:

3. Substitute values and solve for
.Then, you obtain the following result:

4. The answer is: 13 players.
26*5 is 130
He'll have ten left over if each student in year 11 has one :) Hope this helps!
Answer:
this is not an answer sorry, but someone answered me with a link and I opened it and it virused my phone
4 because 9×4=36 and now I need more characters