Looks like 12.5% to me.

"subflood" > wrote in message
m...
> I'm learning about specific gravity and I need a little help.
>
> Say you have 5 bottles of sal****er solution. You know the percent of
> salt each bottle contains and it's specific gravity. For example:
>
> 5% = 1.050
> 10% = 1.080
> 15% = 1.120
> 20% = 1.150
> 25% = 1.200
>
> Now what if you had a bottle that contained an x% of salt but it's
> specific gravity was 1.100. How would you calculate how much percent
> of salt the bottle contains?