Thank you for your replies. I indeed missed a part concerning a total charge. Attached is the new calculations that I did. So in my calculations instead of 1.5 · 10-4 C i used 7.5 · 10-5 C ( which I got by deviding a total charge when capacitors were connected in series by 2 )...
Homework Statement
We consider two capacitors with the unknown capacitances C1 and C2. If
one connects the capacitors in series and applies a voltage of 100 V, finds
that two positively charged plates in total have the charge 1.5 · 10-4 C. If
one switches the capacitors in parallel and again...