A bag contains 150 marbles which are red, green, and blue. Suppose a student randomly selects a marble without looking, records
the color, and then places the marble back in the bag. The student has recorded 9 red marbles, 15 green marbles and 6 blue marbles. Predict how many blue marbles are in the bag.
Ok so the total number of marbles is 150 And these can be either red, green or blue If they’re are 9 RM, 15GM and 6 BM then the total number of marbles the student picked was 30M So 150/30 is 5 So 6 * 5 is 30 so the total number of BM is 30 :)
