@engineers_feed By looking the picture right side instantly 60 light up and considering red balls that are 3 weight comes out 10 and left side you're left with balls. Now that you know the red balls weight subtract from white that is 50 then make it half that is your answer 25.
The best advice I can give anyone is focus on yourself. The moment you look at someone else you have lost your way.
Reference points are good but comparison is the killer of creativity and joy