Question

14 karat gold is a mixture of pure gold and other metals. One ounce of 14 karat gold weighs 0.58 ounce of pure gold. If a 14 karat gold necklace weighs 1.8 ounces, how many ounces of pure gold does it contain?

Answer 1

Easy ! It's 2 because if you read closely you will see

Answer 2

Answer: 1.044 ounces

Explanation:

Given : One ounce of 14 karat gold = 0.58 ounce of pure gold.

i.e. Weight of pure gold in 1 ounce of 14 karat gold = 0.58 ounce of pure gold.

Then, Weight of pure gold in 1.8 ounces of 14 karat gold = 1.8 x (Weight of pure gold in 1 ounce of 14 karat gold)

Weight of pure gold in 1.8 ounces of 14 karat gold = 1.8 x ( 0.58) ounces of pure gold.

It implies 1.8 ounces of 14 karat gold = 1.8 x ( 0.58) ounces of pure gold.

= 1.044 ounces of pure gold.

Therefore, If a 14 karat gold necklace weighs 1.8 ounces that means it contains 1.044 ounces of pure gold.