Question

If the pattern show continues how many black keys appear on a pipe organ with total of 240 keys?

Answer 1

I am not positive but you have to divide by a certain #.

Answer 2

There are 100 black keys in a pipe organ with 240 keys

The ratio of black and white keys in a pipe organ is given as:

$Black :White = 5 : 7$

So, the proportion of black keys in a pipe organ is:

$Black = \frac{5}{5 + 7}$

Evaluate the denominator

$Black = \frac{5}{12}$

When there are 240 keys, the total number of black keys is:

$Black = \frac{5}{12} * 240$

Multiply

$Black = \frac{1200}{12}$

Divide 1200 by 12

$Black = 100$

Hence, there are 100 black keys in a pipe organ with 240 keys

Read more about ratios and proportions at:

https://brainly.com/question/1781657