Question

A piece of alloy contains 60% Copper and 40% zinc by weight . the weight of the alloy is 25 kg . (a) find the weight of Copper in the alloy. (b) if 5 kg of zinc is added to the alloy, find the percentage of copper by weight in the new alloy.

Answer 1

Answer:

3:2 is the ratio of Copper and Zinc.

So, in 25 kg alloy contains 15 kg copper and 10 kg zinc.

Now if 5 kg zinc added then it becomes 15 kg now.

Thus the alloy now contains 15 kg of copper and same weight of zinc.

So in new alloy both copper and zinc are now 50%.

Step-by-step explanation:

Answer 2

above is the solution for the question

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