The pure gold is present in the 18 karat gold chain that has a weight of 2.8 ounces is 2.1 ounces.
The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.
The 18 karat gold chain contains 75% gold and 25% other metal alloys.
If the weight of the gold chain is 2.8 ounces then the gold in the chain will be
→ 0.75 × 2.8 = 2.1 ounces
The pure gold is present in the 18 karat gold chain that has a weight of 2.8 ounces is 2.1 ounces.
More about the percentage link is given below.
https://brainly.com/question/8011401
