Answer:
20 lizard lollies
Explanation:
I attached the missing data.
Given the quantity of each treat below,
Swordfish sockers = 4
Lizard lollies = 10
Puffer pops = 6
From the figures above, the total number of treats is =
4 + 10 + 6 = 20
Since Martrix allows each participant to reach into his bag of goodies and select a treat, he then replaces it with the same treat and shakes the bag before offering a treat to another person. The probability a person picks lizard lollies will be:
Number of lizard lollies / total number of treats

Since the probability a person picks lizard lolllies is ½, If he then allows 40 people to choose a treat from the bag, the number of lizard lollies he can expect to give away will be:
½ * 40 = 20 lizard lollies