SOLUTION: A chemist has x grams of an alloy that is 20% silver and 10% gold, and y grams of an alloy that is 25% silver and 30% gold. Express the number of grams of gold in the two alloys in

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Question 936393: A chemist has x grams of an alloy that is 20% silver and 10% gold, and y grams of an alloy that is 25% silver and 30% gold. Express the number of grams of gold in the two alloys in terms of x and y.
Answer by AnlytcPhil(1806)   (Show Source): You can put this solution on YOUR website!
A chemist has x grams of an alloy that is 20% silver and 10% gold, and y grams of an alloy that is 25% silver and 30% gold. Express the number of grams of gold in the two alloys in terms of x and y.
10% of the x grams of the alloy is gold.  30% of the y grams of it is gold.

10% of x is gold and 30% of y is gold.

10%x + 30%y is gold.

Change the percents to decimals:

0.10x + 0.30y  is gold.

Edwin
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