The sequence of number of color and black and white photos would look like this: 5 color/2 black and white, 15 color/6 black and white, 20 color/8 black and white, and 30 color/12 black and white.
To calculate the number of photos that follow in the sequence, it is necessary to take into account that for every 5 in color there are 2 in black and white.
We can also rely on the graph since it shows the constant relationship between both values. In it we can identify the equivalence between both types of photos.
According to the above, the sequence of number of color and black and white photos would look like this:
Learn more about graph in: https://brainly.com/question/14375099