What do you mean by that?
First, we have to get the fractions to common denominators.
4/5 = 16/20
1/4 = 5/20
5 5/20 - 3 16/20 = 1 9/20
She put 1 9/20 extra cups in.
Given that the line segments NU and US can also be written as line segment NS then Point U would satisfy the Definition of Betweenness.
This simply means that Point U lies between Points N and S along the same line.
12 times because you divide 60 by 5 and get 12.