Answer:
Find the total beads each person has and add them all up to find the total beads altogether.
Jake:
1 bag = 144 beads
12 bags = 144×12
= 1728 beads
Amina:
1 bag = 85 beads
16 bags = 85×16
= 1360 beads
Toni:
1 bag = 75 beads
12 bags = 75×12
= 900 beads
Total beads = 1728 + 1360 + 900
= 3988