2) Eighty students were surveyed as they left the cafeteria after lunch. The following were
the results: 50 students had pizza, 40 students had soda, 21 students had pizza and soda,
17 students had pizza and a cookie, 18 students had soda and a cookie, and 10 students had
all three. How many students had a cookie only?
PLS HELP I HAVE BEEN TRYING TO DO THIS FOR AN HOUR.SOLVE USING A VENN DIAGRAM(GEOMETRY)