Question 1167921
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I will assume that when she mix these dry ingredients, the volume of the mixture is equal to the sum
of the volumes of ingredients.



    It is really <U>an assumption</U>, since it is NOT ALWAYS true for dry ingredients.



Under with assumption, the volume of the mixture is  {{{3/4 + 1/2}}} cups = {{{3/4 + 2/4}}} = {{{5/4}}} cups.


Next, to determine the number of servings, we should divide this volume by one quantum volume of  {{{1/16}}} of a cup.


We will obtain then the number of the servings as


    {{{((5/4))/((1/16))}}} = {{{(5*16)/4}}} = 5*4 = 20 servings.    <U>ANSWER</U>
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Learn how to add and divide fractions from my post (!)