two capacitors(A,B),capacitor(A)is charrged throuh a potential difference(50volt)and capacitor(B)has a capacitance of(30mf)and is charged through a...

two capacitors(A,B),capacitor(A)is charrged throuh a potential difference(50volt)and capacitor(B)has a capacitance of(30mf)and is charged through a potential difference(20volt).after disconnecting the gharging batteries,capacitors(A,B)are connected together in parallel,(positive plate to positive plate)and the common voltage is found to be(35volt).Find the capacitance(A)and the amount of transfered charge?