Abag 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.