Question

Please help will medal
A group of students were surveyed to find out if they like building snowmen or skiing as a winter activity. The results of the survey are shown below:

60 students like building snowmen
10 students like building snowmen but do not like skiing
80 students like skiing
50 students do not like building snowmen
Make a two-way table to represent the data and use the table to answer the following questions.

Answer 1

I cant figure out the calculations for the table because I only have that and the other calculations confuse me