the metal used to make a coin is a mixture of copper and steel. The ratio mass of steel: mass of copper is 108:7 The coin has a total mass of 230 mg calculate the mass of copper in this coin
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Thr ratio of steel : copper = 108:7
Total mass of coin = 230mg
Amount of copper=7x
Amount of steel=108x
108x + 7x = 230
115x = 230
x = 230/115
x = 2
Ans - Mass of copper =7x =7×2 =14mg
Mass of steel = 108x =108×2 = 216mg
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