7. 14 Karat of Gold is 7/12 pure gold and 5/12 other metals.
Let’s convert the value of 7/12 and 5/12 into decimals:
=> 7/12 = 7 / 12 = 0.58 pure gold
=> 5/12 = 5 / 12 = 0.42 metal.
Unit of conversion:
=> 1 Karat = 0.00705479 Ounces
=> 14 Karat = 0.0987671 ounces
Now, how many pure gold are there in 4 ounces of 14 karat each
=> 14 karat = 0.0987671 ounces
=> 0.0987671 ounces * 4 = 0.3950684 ounces
=> 0.40 ounces (7/12 of this is Gold and 5/12 of this is metal)
=> 0.40 ounces / 12 = 0.033
Gold = 0.033 * 7 = 0.23 ounces
Metal = 0.033 * 7 = 0.17 ounces
