Firstly please if you reply don't post the solution, rather the method you would use to get it as I'm trying to learn how to answer this kind of question for an exam. the problem (quoting my question paper): the stars S1 and S2 are seen along the same line of sight from Earth. Srat S1 is at a distance of 10pc, the star S2 is at a distance of 100pc. Their apparent flux ratio is known to be (f1/f2)=2. The combined apparent brightness of both stars seen from Earth is zero magnitudes, i.e m1+2=0.0mag. Determine the individual apparent magnitudes m1 and m2 of the two stars, if they could be resolved.