There are two pizza ovens in a restaurant. Oven 1 burns three times as many pizzas as oven 2. If the restaurant had a total of 12 burnt pizzas on Saturday, how many pizzas did oven 2 burn?
The easiest way to solve is just by trying each answer. If oven 2 burns 3 pizzas then we know that oven 1 burns 3 times that many, which is 9.
9 + 3 = 12
This gives us the correct number of total burnt pizzas.