A very large part of aircraft weight is fuel. Weight divided by L/D ratio gives you required thrust for straight and level flight under assumed conditions of air density etc. And exactly those conditions help define how sweetly the engines are running to their most efficient thrust delivery. You cannot simply ask for an average because there isn't one and at interview you will be expected to show this is so.
If you download the piano-x software from here
Piano-X
one of the aircraft is the A300-600R. Set-up your flight parameters such as weight, distance, cruise speed, flight levels and run the detailed flight profile program. You can then pick off thrust setting in both %MCR, %MCL formats as well as metric or imperial values for various stages in your progress.
Similarly the point performance program shows when instantaneous performance reserves are not good! In fact all the programs in the package are easy to access and highly instructive and should give you the confidence you need at the outset of what I hope will be an enjoyable career.
The author of the programmes is widely respected and has included B787 and A380 in the give-away. Based on what I know of certain aircraft and his interpretation of them, his figures are remarkably close to life on the line. Close enough anyway for your purposes and mine too when I need something better than ball-park figures.
Try not to make your questions insubstantial because the answer "it all depends" is these folks' way of making you stand your questions up with some figures so they can be specific in their answers.
Best rgds
The "E"