Answer:
18 liters of jam after 9 days
Step-by-step explanation:
12 liters = 6 days
12 liters ÷ 6 days = 2 liters per day
2 liters per day x 9 days = 18 liters of jam in 9 days
Dave jarred 18 liters of jam in 9 days
Hopefully this helps :3 sorry if wrong :( plz mark brainiest if correct :D Your bootiful/handsome! Have a great day luv <3
-Bee~