
Concept explainers
To find: The ratio of black keys to white keys in simplest fraction form and also to explain its meaning.

Answer to Problem 16PPS
Ratio of black keys to white keys in simplest fraction form is 9/13 and its meaning is that there are 13 white keys on each same group of 9 black keys.
Explanation of Solution
Given information: On a full size piano, there are 36 black keys and 52 white keys.
Concept used: Here said ratio will be divided by common factors of both 36 and 52, till it comes in simplest form.
Calculation : So,
Conclusion: So, the required ratio in simplest fraction form is
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