Answers

2015-01-10T23:32:20+05:30
The Brainliest Answer!
2015-01-11T10:52:54+05:30
4.5 grams of alloy --------------------------3.5 grams of copper
18.9 grams of alloy------------------------------x 

x= 18.9*3.5/4.5=66.15/4.5= 14.7

Therefore, 18.9 grams of alloy contains 14.7 grams of copper.
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