A Jack in the Box franchise manager has determined that the chance a customer will order a soft drink is 0.90. The probability that a customer will order a hamburger is 0.60. The probability that a customer will order french fries is 0.50.

a. If a customer places an order, what is the probability that the order will include a soft drink and no fries if these two events are independent?

b. The restaurant has also determined that if a customer orders a hamburger, the probability the customer will also order fries is 0.80. Determine the probability that the order will include a hamburger and fries.