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IBPS RRB Officer Scale 1 Model Paper 13

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Directions (Qs. 41-45) : In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer-

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Question : 42

Total: 80

An alloy contains tin and copper in the ratio 3:4 and 10kg pure copper is melted and mixed with it. If the resultant alloy contains 38 kgof copper, what is the weight of the original alloy?

15 kg
40 kg
28 kg
49 kg
None of these

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