Question

Darnell caught 4 fish in 2 hours. At that rate, how many fish will he catch in 6 hours.

Answer 1

$\bf \begin{array}{ccll} fishes&hours\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 4&2\\ f&6 \end{array}\implies \cfrac{4}{f}=\cfrac{2}{6}\implies \cfrac{4\cdot 6}{2}=f$

Answer 2

The answer is 12 because it's 2 fish an hour.