$2\mathrm{.}20$ kJ of heat is added to a slug of silver and a separate $2\mathrm{.}20$ kJ of heat is added to a slug of manganese. The heat capacity of the silver slug is $423$J$/\backslash$deg C while the heat capacity of the manganese slug is $715$ J$/\backslash$deg C$.$

If the slugs are each originally at $25\mathrm{.}00\backslash$deg C$,$ what is the final temperature of each slug?