To determine how many sundaes can the shop make using all fruits you have to add them together first:
5 3/4 pounds of blueberries
4 1/2 pounds of cherries
Add them to determine the mix
[tex]5\frac{3}{4}+4\frac{1}{2}[/tex]Then, we know that the show uses 1/6 pound of the mix for each sundae, so yo see how many sundaes you can make, you have to divide the mix by 1/6
[tex](5\frac{3}{4}+4\frac{1}{2})\div\frac{1}{6}[/tex]The correct option is the last one.