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Answer:
23% of Michael's rock collection is metamorphic rock.
Step-by-step explanation:
We are given the following in the question:
Percentage of igneous rock in the collection = 27%
Percentage of sedimentary rock in the collection = 50%
Remaining rocks are metamorphic rock.
Total collection = 100%
Percentage of metamorphic rocks =
Thus, 23% of Michael's rock collection is metamorphic rock.