1. The problem statement, all variables and given/known data Twelve equal rectangular ceiling panels are placed in a four long by three wide grid. Each panel is 150mm longer than it is wide. Between the panels runs an edge/middle strip which totals 40.0m in total length. (This runs round the whole perimeter and between each panel). By developing a system of linear equations what are the dimensions of the room? So I have been staring at this all day. I know I am missing something simple but translating the given detail into something I can develop and solve is just a block at the moment. I would love some guidance if possible. 2. Relevant equations ?? 3. The attempt at a solution Have made many but none are correct!