Question

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

Answer 1

Answer:

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