Solution

159493

First name
Chris
School
Glendenning Public S
Country
Age
11

Three Red Circles plus 1 green circle =18
18-1green=three red circles
Inverse Operations
If 1 green=6
18-6=12
Because it says three red circles, we need to 12 divided by 3 equals 4, so one circle equals 4. That means the square has to be 8. If you use this you can find out that hexagon is seven. Therefore the total of question mark is 21