The density of Mantle is
Answer: Option E
Calvin wants to go to Milwaukee. He can choose from bus services or train services to head from home to downtown Chicago. From there, he can choose from 2 bus services or 3 train services to head to Milwaukee.This time, he has to purchase a bus concession (which will only allow him to take buses), or a train concession (which will only allow him to take trains). If he only has money for one of these concessions, how many ways are there for him to get to Milwaukee?