According to the given information: B is twice as heavy as A B = 2 × A C is 20 kg heavier than E C = 20 + E D is one and a half times as heavy as E D = 1.5 × E C is four times as heavy as A C = 4 × A A = C ÷ 4 Weight of E is 20 kg E = 20 kg C = 20 + 20 = 40 kg D = 1.5 × 20 = 30 kg A = 40 ÷ 4 = 10 kg B = 2 × 10 = 20 kg So, the ascending order of the weight of the objects is: A < B = E < D < C Hence, the heaviest object is "C, 40 kg".