PLEASE PLEASE PLEASE PLEASE HELP ME!

suppose ruth ann has 3 routes she can travel between the school to the library and 5 routes from the library to her home. how many routes are there from ruth anns school to her home with a stop at the library.
a. 9
b. 60
c. 15
d. 25

Question

PLEASE PLEASE PLEASE PLEASE HELP ME!

suppose ruth ann has 3 routes she can travel between the school to the library and 5 routes from the library to her home. how many routes are there from ruth anns school to her home with a stop at the library. 
a. 9
b. 60
c. 15
d. 25

phi · Answer

I think you multiply the different ways of getting from school to the library and the library to home

anonymous · Answer

For every route from school to the library,
she can choose 5 routes going home.

with 3 routes from school to the library,
she'll have 3 • 5 = 15 routes from the school to her home.

ybarrap · Answer

Using the figure below, how many "paths" can you make between the school and her home?

|dw:1396142642396:dw|

This represents the number of routes possible.

Once you understand the process, you can simply multiply 3 and 5 to get the same answer.