(anyone good at probabilities? )the train station runs trains every 30 minutes. find the probability that a passenger who arrives at a random time will not have to wait more than 20 minutes.
a.1/3
b.1/2
c.2/3
d.25/30

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step-by-step explanation:

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25