Problem
First name
Lily
School
Fitzharrys School
Country
Age
12
The solution for this is
Circle=4
Triangle=6
Square=8
Hexagon=7
And the missing solution is 21.
I worked out this by dividing 18 by three because there were three circles. This equaled 6 which meant that the triangle was six and the three circles were 4 becuase 6+(3x4)=18.