A goldsmith from Highgarden is licenced to buy only two compositions of gold. One of 12 carats and the other of 16 carats purity. He wishes to make an ornament of 15 carats purity. In what amount must he mix the compositions so as to get the required composition of gold?

Q. What is the number of Au atoms in 300 mili gram of gold of 20 carat gold where pure gold is 24 carat.

Q. Given that 24 carat gold is pure gold 18 carat gold is 314 gold and 20 carat gold is 5/6 gold. Find the ratio of the pure gold in 18 carat gold to the pure gold in 20 carat gold.

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In ayurvedic preparation of swarnabhasma, what purity of golden will be used?

The correct option is A 42 % gold + silverSwarna Bhasma is prepared from Gold. It is used in Ayurvedic treatment of infertility, asthma, tissue wasting, poisoning etc. This medicine should only be taken strictly under medical supervision.In the given question option A is the correct answer.

The correct option is A $42$ % gold + silver
Swarna Bhasma is prepared from Gold. It is used in Ayurvedic treatment of infertility, asthma, tissue wasting, poisoning etc. This medicine should only be taken strictly under medical supervision.
In the given question option A is the correct answer.