80 staff members were asked if they travel to school by bus or by walking.
32 of the staff members are teachers, the rest are support staff. 18 of the support staff walk. 30 of the staff members walk in total.
Use this information to complete the frequency tree.
One of the 80 staff members is chosen at random.
Write down the probability that this person is a teacher and walks.
Practise OCR GCSE Maths Frequency Trees with exam-style questions for Foundation and Higher tier. 28 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.
