Verified Answer :

pingwin09

Let w = white and b = black.
Using the proportion,
13/w = 9/b
Since w = 52 white keys, therefore
13/52 = 9/b
b = 36 black keys

✡ Answer: 9/36 ✡

- - Why?

Because if you look at it like this:

\(\frac{13}{52} = \frac{9}{36}\)

- 52 being the white and 36 because the black.

✡Hope this helps✡



Related Questions