GHong14 wrote:
"Volume of 800 kilograms of the substance is 1 cubic meter" must be re read as "volume of 800 × 1000 grams of the substance is 1 × 1,00,000 cubic centimeters", under some given conditions. Under the same given conditions, unitary method thus gives volume of 1 gram of this substance to be 1,000,000/ (800 × 1000) = [spoiler]
1.25 cubic centimeters.
B[/spoiler]