In a public opinion poll at mira mesa college, students voted on what they wanted to do with additional funds. Proposition A was to cut the food prices in the cafeteria and Proposition B was to increase parking spots - students would put a check-mark by the option for each proposition (a yes vote) or leave it blank (a no vote). When the ballots were counted:

• 67 were blank
• 278 were yes on A
• 530 were yes on B
• 195 were yes on both A and B.