I need help with this Venn Diagram!?

Question

1.On one particular day, 49 people purchased drinks from a vending machine. If 27 people purchased Orange Soda and 30 purchased root beer, how many people purchased both?

2.While watching the staff-student basketball game, 30 fans cheered for the staff, 50 cheered for the students, and 17 cheered for both. If there were 65 fans watching the game, how many people cheered for neither?

THANKS!

Answer 1

1. 1 Person purchased both.

2. don't know

Answer 2

1.  27 + 30 = 57, which is 8 more than 49.  So 8 people must have had both.

2.  30 + 50 - 17 cheered for staff and students (so 63 did).  Therefore, 2 people didn't cheer for either.

Answer 3

1: 8 people

2:idk