18 $\mu$ F and 36 $\mu$ F Capacitors Are Connected in Series and Then Charged by in Series

Short Answer

1.8 $\mu$ F and 3.6 $\mu$ F capacitors are connected in series and then charged by a 24. volt battery. The battery and capacitors are disconnected and the capacitors reconnected in parallel (plus to plus, minus to minus)
(a) What charge initially flowed from the battery to the series combination?
(b) What total charge is on the final positive plates?
(c) What final voltage is across the parallel combination?