Answer:
10:30 (simplified- 1:3)
Explanation:
there are 10 red cards so the first number would be 10
the other cards are black hearts and blue cards, if you add them together that is 30 cards, therefore, the answer is 10:30
1/4
10+10+20=40
10 of those are red cards which makes it 10/40 which is simplified to 1/4.
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