What is the compound ratio of the following ratios: 3:5, 7:9, and 15:28?

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answer is A.

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Detailed Solution

Concept: Before using it to calculate the requested compound ratio, we will first review the definition of a compound ratio. To do this, we will write all the values as fractions, multiply them, and then remove any common terms from the numerator and denominator. To get the outcome, we shall finally rearrange the numbers.
In order to begin answering the question, let's first define compound ratio:
Ratio compounded: A compound ratio is the end result of adding two or more ratios together by product or multiplication. As a result, the ratio formed by multiplying two or more ratios, such as ab:cd, is a ratio made up of the simple ratios a:c and b:d.
After providing the definition, we will now attempt to address this query.
Let's now multiply the ratio after writing it as a fraction.
The result of multiplying all three of them is,

Hence, we have found the value of compound ratio.
Hence, option 1 is correct.

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