Answer:
3
Step-by-step explanation:
The recipe serves 36 people. You need to serve 108 people.
In the example,
original serving (8) * multiplier (4) = new serving (32)
Here,
original serving = 36 and new serving = 108
36 * multiplier = 108
divide both sides by 36 to isolate the multiplier
108/36 = multiplier = 3