Question

A standard piano has 88 keys. There are 52 white keys and 36 black keys. What is the ratio of white keys to black keys?

Answer 1

Answer: 13:9

52 white keys to 36 black keys

Then you can divide both by 2

26:18

13:9

Answer 2

13 : 9

Explanation:

White keys : Black keys

52 : 36

(simplify by dividing by 4)

13 : 9