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?
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Answer:
36% :44%
Explanation:
Assume the weight of the alloy is 100 kg
So, the weight of alloy B is 400 kg
Total amount of gold = 180 Kg (40 + 140)
Total amount of silver = 220 kg (60 + 160)
We hence get, ratio of gold and silver in new alloy
= 180/500 : 220/500 = 9/25 : 11/25.
Therefore in percentage = 9/25 x 100 : 11/25 x 100 = 36% : 44%
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