Correct answer: C. 3 : 7
Explanation: Out of the 7 days in a week, the weather report predicts rain for 3 days. Therefore, the ratio of rainy days to the total number of days in the week is 3 : 7.
The weather report predicts rain for the next 3 days. Assuming the prediction is true and there is no rain on the other days. What is the ratio of rainy days to the total number of days in the week?
A. 7 : 3
B. 3 : 10
C. 3 : 7
D. 4 : 7
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