At a local restaurant 40% of the lunch customers order a hamburger, 70% of the lunch customers order French fries, and 30% of lunch customers order both a hamburger and French fries. If a lunch customer is randomly selected from this restaurant, what is the probabilty that the customer order fries if we know
they ordered a hamburger?
O 0.30
O 0.75
O 0.43
O 0.40