To find:
How many more minutes can Jackson play betore he uses all or his time.
Solution:
Given that Jackson plays for 9 minutes and used up 30% of his time. He has 70% of more time to use. so,
[tex]\begin{gathered} 30\%=9\text{ minutes} \\ 10\%=3\text{ minutes} \\ 70\%=21\text{ minutes} \end{gathered}[/tex]Thus, he can use 21 more minutes before he uses all of his time.