Asked by pedro

A bag contains 100 marbles, some red and some purple. Suppose a student, without looking, chooses a marble out of the bag, records the color, and then places that marble back in the bag. The student has recorded 9 red marbles and 11 purple marbles. Using these results, predict the number of red marbles in the bag.

Answered by oobleck
9 of the 20 drawn were red
9/20 * 100 = 45
Answered by Mrs. Pickles?
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