Query about question "A regional energy authority monitors seven solar installations..." [14059]

https://gmat.gregmat.com/practice/custom-practice/?problem=a-regional-energy-authority-monitors-seven-solar-installations


The third option in this question asks about data that doesn’t exist in the table (all rooftop installations are LOWER in output, not higher). No inference can therefore be made but the correct answer shows as yes..

“annual output per megawatt” = annual output/capacity

@Shweta should this be explicitly mentioned though?

Most rooftop installations whose annual output per megawatt exceeded that of every ground-mounted installation had a reliability rank better than 6.

sounds a bit ambiguous; I wonder whether this is clearer?

Most rooftop installations whose annual output per megawatt of capacity exceeded that of every ground-mounted installation had a reliability rank better than 6.

Another reason is that it looks like the unit of output is MW, which isn’t correct.

Hey!

Read the statement again. We are talking of annual output per megawatt - this means Annual output divided by capacity (in MW). So, it is not given data in a single column, but it is something we can calculate using two columns.

Learning for you - Use units of given or asked quantities to figure out how to find them!