There are two alloys P and Q made up of silver, copper and aluminium. Alloy P contains 45% silver and rest aluminum. Alloy Q contains 30% silver, 35% copper and rest aluminium. Alloys P and Q are mixed in the ratio of 1 : 4 . 5. The approximate percentages of silver and copper in the newly formed alloy is:
Composition of alloy P
Silver:Copper:Aluminium = 45:0:55
Composition of alloy Q
Silver:Copper:Aluminium = 30:35:35
They are mixed in ratio of 1: 4.5
Let us consider alloy P is taken 200 grams and alloy Q is taken 900 grams.
Then for alloy P :-
Silver:Copper:Aluminium = 90:0:110
For alloy Q:
Silver:Copper:Aluminium = 270:315:315
Total weight of P and Q combined is 1100 grams.
When P and Q are mixed, the new combined ratio ofÂ
Silver:Copper:Aluminium = 360:315:425
Percentage of Silver in mixture = $$\frac{360}{1100}$$ x 100 $$\cong$$ 33%
Percentage of Copper in mixture = $$\frac{315}{1100}$$ x 100 $$\cong$$ 29%
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