Rohit bought two alloys of zinc and copper in the ratio of 3 ∶ 1 and 5 ∶ 2 respectively. He bought 28 kg of both the alloys. He mixed both the alloys. Find the ratio of copper and zinc in new alloy?

1
17 ∶ 41
2
15 ∶ 41
3
41 ∶ 15
4
41 ∶ 17

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