Marcella is not correct. The proportion of mystery books to the total number of books should be calculated as follows:
60 mystery books / 100 total books = 0.6
Therefore, mystery books actually make up 0.6 (or 60%) of the total books read by Marcella over the school year.
To help support this explanation, a model could be created using a bar graph. The bar representing the mystery books would be 60 units long, while the bar representing the total number of books would be 100 units long. This visualization would clearly show that the mystery books make up a larger proportion of the total books read by Marcella than she initially estimated.
Marcella read 100 books over the school year 60 of the books were mystery she said the mysteries equal 0.06 of the total books is she correct? Explain your thinking and describe a model that could be used to help support your explanation
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