Question 101 (i)

Here is a keyboard for a harmonium.
Find the ratio of white key to black keys on the keyboard.

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Solution

According to the given figure,
The total number of black keys = 7
The total number of white keys = 10
Hence, the ratio of white keys to black keys on the keyboard = $\frac{10}{7}$

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Similar questions

Question 101 (i)

Here is a keyboard for a harmonium.
Find the ratio fo white key to black keys on the keyboard.

Question 101 (i)

Here is a keyboard for a harmonium.
Find the ratio of white key to black keys on the keyboard.

Question 101 (ii)

Here is a keyboard fo a harmonium.

What is the ratio of black keys to all keys on the given keyboard?

Question 101 (ii)

Here is a keyboard fo a harmonium.

What is the ratio of black keys to all keys on the given keyboard?

Question 101 (iii)

Here is keyboard of a harmonium.

This pattern of keys is repeated on a larger keyboard. How many black keys would you expect to find on a keyboard with 14 such patterns?

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