Ahighway rest area contains a vending machine that dispenses cups of coffee. the amount of coffee that the machine provides when a purchase is made approximately follows a uniform distribution between 200 and 250 ml.

(a) the probability that a randomly selected cup will contain more than 229 ml is .
(b) the probability that a randomly selected cup will contain between 208 and 238 ml is .
(c) 18 percent of cups will contain more than ml.