I’ve never been one for writing ‘puzzles’ or problem solving questions.  The level of creativity, I’ve often felt was beyond me.  Instead, I tend to select these from other sources.  However, I’ve been looking at the structure of questions I like from old UKMT papers.  

This isn’t directly influenced by any specific question, but I know they often have some where quantities are related and pupils have to find values. 

Let me know what you think. 

Credit: @chrismcgrane84