Let weight of each bag be a,b,c and 22 kg Average weight of last three bags = 18 kg ⇒ b+c+22=18×3 ⇒ b+c=54−22=32 -------------(i) Also, average weight of first three bags = 19 kg ⇒ a+b+c=19×3=57 Substituting value from equation (i), ⇒ a+32=57 ⇒ a=57−32=25kg