What is the weight of pure Gendium, in gms/cc?

Question

A sample which is 20% Vendium, 50% Rulium and 30% Gendium weighs 8.8 grams/cc.
A sample which is 60% Vendium, 20% Rulium and 20% Gendium weighs 9.8 grams/cc.
A sample which is 30% Vendium, 30% Rulium and 40% Gendium weighs 8.8 grams/cc.
What is the weight of pure Gendium, in gms/cc?

Answer 1

You need to set up three equations in three unknowns, and then go about solving them. Use decimals for the percents (20% = 0.2) and the imaginary elements' initials for the unknowns. The first equation would read 0.2v + 0.5r + 0.3g = 8.8. Take it from there.