A bag is filled with small and large marbles. The ratio of small to large marbles is 1:3. There are eight more large marbles than small marbles. On your diagram, how many marbles does each bar represent? [Type your answer as a number.]
If you increase the large and small marble amount by 4, you get 4:12 small and large marbles. If you subtract the 4 small marbles away from the 12 large marbles, you get a difference of 8. So, there are 4 small marbles and 12 large marbles.
