A. ABC Your welcome have a great day!
$2.00 cause imagine she has 6 dollar 2/3 is 4.00 so it's 2.00
2:3:9......added together = 14
2/14 (500) = 1000/14 = 71.43
3/14 (500) = 1500/14 = 107.14
9/14 (500) = 4500/14 = 321.43
3/9 is your answer. 3+6=9 and there are 3 red marbles.