The total weight of Bob, Chen, and Mark is 147kg. Chen is twice as heavy as Mark, and Bob’s weight is half of Mark’s weight. What is Chen’s weight?
Let the weight of Mark be x kg.
Therefore, Chen's weight is 2x kg.
Bob's weight is x/2 kg.
The total weight of Mark, Chen, and Bob is x + 2x + x/2 = 147 kg.
Combining like terms, we get 5x/2 = 147 kg.
Multiplying both sides by 2/5, we get x = (2/5) * 147 = 58.8 kg
Hence, Chen's weight is 2 * 58.8 = 117.6 kg. Answer: \boxed{117.6}.