Suppose Ruth Ann has 4 routes she can choose from to get from school to the libr

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Suppose Ruth Ann has 4 routes she can choose from to get from school to 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?

A.120

B.20

C.25

D.16

Apr 27th, 2015

This is a simple counting problem.  There are 4 ways to go from her school to the library and 5 ways to go from the library to her home.

So, the total number of routes are 4x5 = 20  Choice B.

Apr 27th, 2015

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Apr 27th, 2015
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Apr 27th, 2015
Jun 29th, 2017
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