How many packets of jelly to make 12.5lt?

To determine how many packets of jelly are needed to make 12.5 liters, you first need to know the amount of liquid each packet makes. For example, if one packet makes 1 liter, you would need 12.5 packets. If one packet makes 0.5 liters, you would need 25 packets. Adjust the calculation based on the specific yield of the jelly packet you are using.