SEAMO 2022 — Paper E — Grade 9–10 Question 19

In a survey, $50\%$ drink coffee brand $A$, $45\%$ brand $B$, and $40\%$ brand $C$. Also $25\%$ drink both $A,B$, $10\%$ both $B,C$, $16\%$ both $A,C$, and $8\%$ all three. What percentage do not drink coffee?