Question

Jack is learning to play piano. He knows that a piano has 88 keys and that there are 12 unique keys in each group called octave. How many complete octaves are on a piano?

Answer 1

There are seven full Octaves on a piano with 88 keys 

Answer 2

7 octaves

Explanation:

Total number of keys in piano = 88 keys

Numbers of keys in each group called octave= 12 unique keys

We have to find the number of complete octaves on piano

Number of octaves consists of 12 keys=
`(Total number of keys)/(12)`

Number of octaves consists of 12 keys=
`(88)/(12)`

Number of octaves consists of 12 keys= 7 octaves

Hence, the correct answer is 7 octaves