Silver math

[Eduards]

Hello.

I am trying to figure out pure weight of silver from 835 silver coins. Total weight of this purity coins is 195 grams. 

Can someone tell me formula on how to calculate? 

[mr-dead]

195 X 0.835 = 162.825g

[SBrit20]

Take how pure are the coins then multiply the total wieght by the purity. If you have coins with differing purities then you'll need to seperate them into total weight for that purity then multiply by each coins purity, you then sum the weight of silver you have from each purity level (i.e. 195g of coin at 83.5% purity would be 195g x 0.835 =  162.825g of silver).

[Eduards]

You guys help a lot! 

[TeaTime]

Keep in mind that silver buyers often catagorise silver coins sold as scrap into 999, 958, 925, 800 etc. fineness. Some silver items can fall between those standards and will, generally, be classed as the next fineness down.

[GoldElliott]

30 minutes ago, TeaTime said:

Keep in mind that silver buyers often catagorise silver coins sold as scrap into 999, 958, 925, 800 etc. fineness. Some silver items can fall between those standards and will, generally, be classed as the next fineness down.

yes I keep scrap seperated into bags

.925, .900, .835, .800, .720, .640, .625, .500, .400 etc. then when I want to work out how much one is worth its very simple just:

weight in g * silver purity * 0.466 (or whatever silver price per g is).

On 28/05/2020 at 09:19, Eduards said:

Hello.

I am trying to figure out pure weight of silver from 835 silver coins. Total weight of this purity coins is 195 grams. 

Can someone tell me formula on how to calculate? 

would be 195*0.835*0.466= £75.88