Question: Mail Delivery. A local postal carrier distributes first class letters, advertisements, and magazines. For a certain day, she distributed the following numbers of each type of item:

First-class

Delivered to letters Ads Magazines

Home 325 406 203

Business 732 1021 97

If an item of mail is selected at random, find these probabilities.

a. The item went to a home.

b. The item was an ad, or it went to a business.

c. The item was a first-class letter, or it went to a home.