Answer :
Answer:
80
Step-by-step explanation:
If the bag has 100 marbles and 7+2+11=20 then you subtract what you got adding the quantities you already know from the total, and you have your answer :D
Answer:
80
Step-by-step explanation:
If the bag has 100 marbles and 7+2+11=20 then you subtract what you got adding the quantities you already know from the total, and you have your answer :D