How much more pure gold be added to 2 kg of 18 carat gold to convert it into 22 carat gold? (18 carat means: 18 parts pure gold and 10 parts alloy)
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Answer:
4 kg
Step-by-step explanation:
Quantity of gold = 2kg (Given)
Purity = 18 carat (Given)
Thus, according to the formula for the calculation of gold -
[(Final Carat -Beginning Carat) x Beginning Weight] / (24 x Final Carat)
= [(22–18) x 2] / (24 - 22)
= ( 4 x 2) / 2
= 8/2
= 4
Therefore, 4 kg. of pure gold should be added to 2 kg of 18 carat gold to convert it into 22 carat gold,
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