4.5 gram of an alloy of Copper and Zinc contain 3.5 gram of copper what weight of copper will their be in 18,g of the alloy
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4.5 g of alloy contains 3.5 gm
so 1 gm of an alloy will contain 3.5/4.5 gm of copper=7/9 gm of copper
so 18.9 gm of alloy will contain (7/9)*18.9 gm of copper =14.7 gm of copper.
so 1 gm of an alloy will contain 3.5/4.5 gm of copper=7/9 gm of copper
so 18.9 gm of alloy will contain (7/9)*18.9 gm of copper =14.7 gm of copper.
justice2:
u have done right besides 18.9 in place of 18
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