5:15 belongs to the set of proportions 1:3, 1.5:4.5, 2:6, 2.5:7.5.
To solve this question, we simply need to consider all of our options provided in the question statement for trial-and-error method to obtain our desired answer.
The set of proportions provided in the question statement, are
1:3, 1.5:4.5, 2:6, 2.5:7.5, i.e.,
1: (1*3), 1.5: (1.5*3), 2: (2*3) and 2.5: (2.5*3).
So, it is clearly visible that the proportions in the ratio of (1: 3).
We will have to find out that, which one among the options has the ratio of (1: 3).
Considering option A, 3: (3*3) = 3:9 and not, (3:7.5); Hence, not our correct answer.
Considering option B, 4: (4*3) = 4:12 and not, (4:8); Hence, not our correct answer.
Considering option C, 5: (5*3) = 5:15 which is matching with option C fully. Hence, our correct answer is (5:15).
- Proportions: A proportion is a mathematical comparison between to numbers of ratios where they are set equal to each other.
To learn more about Proportions, click on the link below.
brainly.com/question/23458096
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