一桶油连桶重16千克，用去一半油后，连桶重9千克，原有油多少千克？桶重多少千克？*X:[3A*\6|)A1H3?8L+p8N4b+a(t*W*}
算式：提示4K4O*N5b2g)G.o'G4i)_*X:[3A*\6|)A1H3?8L+p8N4b+a(t*W*}
答：原有油.o7J;L,},S-?6P,_1@*j.Q.f千克，桶重0I.L;^+g*s([(Z/}6V1[9y千克。*X:[3A*\6|)A1H3?8L+p8N4b+a(t*W*}