Question
Mary collected twice as many marbles as Fiona. Fiona collected thrice as many marbles as Opal. What is the ratio of the number of marbles collected by Opal to the number of marbles collected by Mary?
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Mary collected twice as many marbles as Fiona. Fiona collected thrice as many marbles as Opal. What is the ratio of the number of marbles collected by Opal to the number of marbles collected by Mary?