Ah sweet sweet proportion, the nemesis of many a student.
"Is that the fish thing sir?"
"You're damn right it is!!"
These combination problems with 3 variables, mixture of direct and inverse, seem to be really popular in exams but hard to find examples of - so I made this.
Used this for short windows of spaced repetition in the weeks following teaching of the skill - 5 to 10 minutes of brute force maths every few lessons!
New questions & answers every time you open.
