### 1 Answer

Relevance

- InquizetifLv 71 month ago
There are 75 Blue marbles and 25 Purple marbles.

25 Purple marbles are added, making 125 marbles in total.

75/125 = 3/5

3/5 x 3/5 = 9/25 or 36%.

This is if the first marble is put back into the bag.

3/5 x 74/124 = 222/620 = 35.8% if the first marble is not put back

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