Tanya's science class had a quiz on 13 of the first 40 days of class. Which is this ratio as a decimal?
The ratio of quiz days to total class days can be calculated as:
Quiz days / Total days = 13 / 40
Dividing 13 by 40, we get:
13 / 40 ≈ 0.325
Therefore, the ratio as a decimal is approximately 0.325.