Math DS 7.4.3.3

13. A school offers a sandwich, chicken wings, or a salad for lunch one day. The sandwich is three times more popular than the chicken wings and the salad is twice as popular as the chicken wings. What is the probability that a student chosen at random will choose the salad for lunch?

A. 1/3

B. 2/3

C. 2/5

D. 2/7

14. On average there are 3 sunny days for every rainy day throughout May and two rainy days for every partly cloudy day. What is the probability that a day chosen at random in May will be partly cloudy?

A. 1/4

B. 1/3

C. 1/6

D. 1/9

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