Question

PLEASE HELP
A group of students were surveyed to find out if they like bike riding and/or roller skating as a hobby. The results of the survey are shown below:
80 students like bike riding
20 students like bike riding but do not like skating
90 students like skating
40 students do not like bike riding
Make a two-way table to represent the data and use the table to answer the following questions.
Part A: What percentage of the total students surveyed like both bike riding and skating? Show your work.
Part B: What is the probability that a student who does not like bike riding also does not like skating?

Answer 1

I don't know how to do the graph.

Part A: 80+20+90+40= 230 students. 90 for skating + 80 for biking= 170 170/230= 0.74 =74%

Part B: 20 for no skating+ 40 for not biking = 60. The probability is 60 out of 230 students