Solution

156118

Problem / game
First name
Ethan
School
King George V School
Country
Age
11
Email address
marshe1@kgv.hk

1/25 + 3/5 + 3/20 = 79/100
i simplified them so it was easier to add them together.
4/100 + 60/100 + 15/100
it isnt very close but this is the closest one i managed to find.