There are some coins and rings of either gold or silver in a box, 60% of the objects are coins, 40% of the rings are of gold and 30% of the coins are of silver. The percentage of gold articles is :

There are some coins and rings of either gold or silver in a box. 60% of the objects are coins, 40% of the rings are of gold and 30% of the coins are of silver. What is the percentage of gold articles ?

Percentage of gold in 14 carat gold is :

Percentage of gold in 14 carat gold is :