You find a ratio by comparing two numbers. For example, if there are 2 greens marbles, 6 red marbles and 5 blue marbles in a bag, what is the ratio of green to blue marbles. The answer is 2:5.
roxmbennett, Answers Expert
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Then again, this answer might help you...
Ratio expresses the magnitude of quantities relative to each other. Ratio of two quantities indicates how many times the first quantity is contained in the second.
