At Pizza Pi, the number of Pizzas that had extra cheese last week = 27
The percentage of Pizzas that had extra cheese last week = 9%
Let us assume that the number of Pizzas made last week = X
Then
we can write the equation as,
9X/100 = 27
9X = (27 * 100)
9X = 2700
X = 2700/9
= 300
Then it can be deducted that 300 pizzas were made last week .