Micheal > pirate > 83
Christopher > Spiderman > 55
Victoria > cheerleader > 47
Courtney > mermaid > 88
Nicole > Spidergirl > 74
ANSWER
The solution is

EXPLANATION
The given equations are:

and

We multiply equation 1 by 3 to get,

We multiply equation 2 also by 2 to get,

We subtract equation 4 from equation 3 to get,

This implies that,

We put this value of y into any of the equations say equation 2

Simplify

Group like terms

Simplify,

Divide both sides by 3 to get,

Therefore the solution is

The correct answer is option D.
The answer is
a) 11/15
b) 1/18