You order twelve burritos to go from a mexican restaurant, five with hot peppers and seven without. however, the restaurant forgot to label them. if you pick three burritos at random, find the probability that none of them have hot peppers. (round the answer to three decimal places.)

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?