Bradley gets the bus on Saturday and Sunday.
The probability that Bradley's bus will be late on any day is 0.2
Complete the probability tree diagram.

Work out the probability that Bradley's bus is late on at least one of these days.
Practise Edexcel GCSE Maths Probability Trees with exam-style questions for Foundation and Higher tier. 40 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.