You are making necklaces for your friends. you have 84 blue beads and 36 red beads. each friend will receive an identical necklace and all beads must be used

Small: 8

Large: 16

Step-by-step explanation:

If you know that each large can is twice the size of a small can then you can form the equation x=2x meaning every one large can equals two small cans. That means that the 2 large cans are equal to four small cans, so altogether you have nine small cans. Between those nine you have 72 liters, so your equation should be 72=9x. To solve you do 72/9 which is 8. That means eight liters are in a small can and you can double it to find that sixteen liters are in a big can.