Answer:
The amount of floor Mrs.Stewart needs for [tex]5[/tex] cups of shortening [tex]=\frac{75}{4} =18\tfrac{3}{4}[/tex] cups.
Step-by-step explanation:
Mrs.Stewart pie dough needs [tex]\frac{2}{3}[/tex] cups of shortening for [tex]2\tfrac{1}{2}=\frac{5}{2}[/tex] cups of flour.
Now we assume that the shortening needed for [tex]x[/tex] cups of flour is [tex]y[/tex] cups.
Accordingly we can arrange the ratios.
[tex]\frac{cups\ of flour\ (x)}{cups\ of\ shortening\ (y)} =\frac{x}{y} =\frac{5/2}{2/3}[/tex]
Plugging the value of [tex]y=5[/tex] as it is number of cups of shortening Mrs.Stewart have used.
And multiplying both sides with [tex]5[/tex],we have
Number of cups of flour (x) [tex] =\frac{x}{y} =\frac{5/2}{2/3}[/tex]
So (x) [tex]=\frac{5\times 3\times 5}{2\times 2} =\frac{75}{4} = 18\tfrac{3}{4}[/tex]
The amount of floor Mrs.Stewart needed for [tex]5[/tex] cups of shortening = [tex]18\tfrac{3}{4}\ cups[/tex].