What is the liquid weight in a 10000 gallon fuel tanker assu

What is the liquid weight in a 10,000 gallon fuel tanker, assuming that the specific gravity is 0.86?  (just the numerical answer in pounds) Just the weight of the liquid, excluding the truck and trailer.

Solution

Density of water is,d : 8.345 lb/gallon

Density of given liquid is, p=0.86*d=0.86*0.845 lb/gallon

Hence weight of the liquid is, w=p*10000=0.86*0.845*10000=7267 lb