Arecipe that makes 4 servings calls for 2/3 cup of flour. isadora uses a large container of flour to make 20 servings of the recipe. what number represents the change in the amount of flour from the large container?

The concept that is applicable in this item is that of proportionality. The ratio of the first set of values should be proportional to that of the second set. We represent the unknown value of the flour for 20 servings as x and generate the equation,

                                             4/(2/3) = 20/x

The value of x from the equation is 3 1/3. 

the answer is d on edge

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4