Consider the number of points required to drive the race car simulator is
and to drive the snowboard simulator is
.
Marcus used
points from his game card to drive the race car simulator and snowboard simulator four times each.
Hence, the equation is
.
Cody used
points from his game card to drive the race car simulator five times each and snowboard simulator three times each.
Hence, the equation is
.
The system of equations are
and
.
Cramer
s rule: Solutions of the system of equations
and
for
.
Co-efficient matrix
.
Caluculate the determinant of matrix
.
.
Find
.
.
Find
.
.
The solution of the system of equations are
and
.
Number of points required to drive the race car simulator is
.
Number of points required to drive the the snowboard simulator is
.