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Probability S1 question?

1. If someone could help me with this question and explain to me how you got it it would be a great help

At a certain location renowned for road accidents there is a 0.6 chance of there being an accident on a wet day and a 0.2 chance of there being an accident on a dry day. Long term records show that there is a 30% chance of the location having a day which is classified as wet. By first drawing a tree diagram, determine: a) the probability that there will be an accident at the location next Monday.
b) the probability that next Monday is a wet day if there is an accident at the location that day.

Many thanks!
2. First off, do you know how to draw a tree diagram?
3. (Original post by JSG29)
First off, do you know how to draw a tree diagram?
Yes i do
4. (Original post by tinawu)
Yes i do
Draw your tree diagram to show all possibilities of events.

There are two events, one that there will be an accident and the other being the weather on the day.

You can then calculate the probabilities of each outcome using the basics.

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