sure thing! it is easy to say that 50% of 800 will give the answer.To start, can you find a single solution? We can then experiment, to see what happens when we alter those numbers. (We need to find the bounds of each.)
Don't hesitate to try stuff (play with the numbers). You might recognize a pattern or realize a relationship that helps out.
When you use mere trial and error, what are you looking for that would result in an "error"? By thinking more deeply as you try things, you can see more powerful methods. In particular, you will be thinking about factors.sure thing! it is easy to say that 50% of 800 will give the answer.
I see your tips ! but I'm still wondering if there is a mathematical way in determining the boundary?
or is it just observation and trial and error again?
I can think of $999 as the upper boundary for the price