There are 6 gray keys for every 11 black keys. also, the number of black keys is 2 less than twice the number of gray keys. use your answer to part (b) to determine how many gray keys and how many black keys there are.

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,

bn,mn,n.vn.

step-by-step explanation:

the answer is y = 11.54

hope this : )