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?