Answer:
Box below 4: 11
Box above 54: 47
Step-by-step explanation:
hope this helped!

Explanation:
Since we have given that
There are 6 gray keys for every 11 black keys .
So, the ratio will be 6:11
Let the number of gray keys be 6x
Let the number of black keys be 11x
Now, according to question,

so,

a document that a project manager prepares to foresee risks, estimate impacts, and define responses to issues. It also contains a risk assessment matrix.