When Graham and Ashkahn get to definitively answer a question, it's like Christmas. Birds sing and the guys bust out their "Answering a question definitively" dance, which has the added side effect of better crop yields during the coming harvest. It's an exciting time. 

There's a very straightforward mathematical equation for measuring the weight of salt water based on specific gravity, which is excellent. And useful!

Also, whoever wrote this question needs to contact Graham and Ashkahn ASAP!