We can write two equations based on the given information.
Jorge: 6C+ 2V = $127.92
Martin: 3C+8V = $133.89
Solving for V in Jorge's equation we get V= $63.96 - 3C
If we plug this into Martin's Equation we get 3C + 8($63.96 - 3C)=$133.89
This SImplifies to 3C + $511.68 - 24C = $133.89
Further simplification brings us to 21C = $377.79
C = $17.99
Plugging this into the original Equation we get 3($17.99) + 8V = $133.89
$53.97 + 8V = $133.89
8V = $79.92
V = $9.99
