Suppose Ruth Ann has 3 routes she can travel between the school and the library, and 5 routes from the library to her home. How many routes are there from Ruth Ann’s school to her home with a stop at the library?

Answer 1

There are 3 routes from the school to the library and 5 routes from the library to her home. Therefore, the total number of routes from the school to her home with a stop at the library is 3 x 5 = 15 routes.