Answer:
the answer is 67.5
Step-by-step explanation:
look at the photo
15 is 16.66666 percent of 90.
45 multiply 0.22 = 9.9
45-9.9 = 35.1
Markdown is subtract
Since the ratio is part-Whole, first you need to find the whole. If you add all of the marble colors together (17+13+23) you get the total marbles (53) in the box. The ratio of red marbles to the total would be 17 to 53.