Answer
$\frac{16}{27}$
Work Step by Step
To find the average, sum the items and divide by the count of items.
To add, convert to fractions with least common denominator.
$(\frac{3}{5}+\frac{4}{9}+\frac{11}{15})\div3$
=$(\frac{3\times9}{5\times9}+\frac{4\times5}{9\times5}+\frac{11\times3}{15\times3})\div3$
=$(\frac{27}{45}+\frac{20}{45}+\frac{33}{45})\div3$
=$\frac{80}{45}\times\frac{1}{3}$
=$\frac{\big/\!\!\!5\times16}{\big/\!\!\!5\times9\times3}$
=$\frac{16}{27}$
