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Q.
Alloy A contains 40% gold and 60% silver. Alloy B contains 35% gold and 40% silver and 25% copper. Alloys A and B are mixed in the ratio of 1:4 .What is the ratio of gold and silver in the newly formed alloy is?
A.
20% and 30%
B.
36% and 44%
C.
25% and 35%
D.
49% and 36%
View Answer
Correct choice: B
Explanation:
Assume the weight of alloy a is 100 kg Therefore, The weight of alloy B is 400kg Gold silver copper A 40kg 60kg 0kg B 140kg 160kg 100kg total 180kg 220kg 100kg Therefore, Ratio of gold and silver in new alloy = 180/500 : 200/500= 36% :44%
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