A rainy day occurs once in every 10 days. Half of the rainy days produce…
2025
A rainy day occurs once in every 10 days. Half of the rainy days produce rainbows. What percent of all days do not produce rainbows?
- A.
95%
- B.
10%
- C.
50%
- D.
5%
Attempted by 429 students.
Show answer & explanation
Correct answer: A
Solution: compute the relevant percentages.
Probability of a rainy day = 1/10 = 10%.
Half of rainy days produce rainbows, so percent of days with rainbows = 0.5 × 10% = 5%.
Therefore percent of days that do not produce rainbows = 100% − 5% = 95%.
Answer: 95%