Answer:
The amount of floor Mrs.Stewart needs for
cups of shortening
cups.
Step-by-step explanation:
Mrs.Stewart pie dough needs
cups of shortening for
cups of flour.
Now we assume that the shortening needed for
cups of flour is
cups.
Accordingly we can arrange the ratios.

Plugging the value of
as it is number of cups of shortening Mrs.Stewart have used.
And multiplying both sides with
,we have
Number of cups of flour (x) 
So (x) 
The amount of floor Mrs.Stewart needed for
cups of shortening =
.