Answer: The required quantity of pizza that was left is \(\dfrac{11}{8}.\)
Step-by-step explanation: Given that Stanley ordered 2 pizzas cut into eighths and the ate \(\dfrac{5}{8}\) of a pizza.
We are to find the quantity of the pizza that was left.
According to the given information, we have
number of pizzas, n = 2
and
the fraction of the pizza ate by Stanley is
\(f=\dfrac{5}{8}.\)
Therefore, the quantity of pizza that was left is given by
\(p_l=n-f=2-\dfrac{5}{8}=\dfrac{2\times8-5}{8}=\dfrac{16-5}{8}=\dfrac{11}{8}.\)
Thus, the required quantity of pizza that was left is \(\dfrac{11}{8}.\)
