Question

A retail shop accepts only cash or checks. Suppose that 57% of its customers carry cash, 50% carry checks, and 39% carry both cash and checks. What is the

probability that a randomly chosen customer at the shop is carrying cash or checks (or both)?
Write your answer as a decimal (not as a percentage).

Answer 1

A retail shop accepts only cash or checks. Suppose that

46

% of its customers carry cash,

37

% carry checks, and

74

% carry cash or checks (or both). What is the probability that a randomly chosen customer at the shop is carrying both cash and checks?