I don't really upload a lot ok please help me. Ok how do u solve these problem exactly. EX. Let's say there are 3 people 1 baby 1 child and 1 adult and in all they weigh 122 kg, and in the other scale there is 1 adult and 2 babies they all weigh 115kg and in the other scale there is 4 babies and 1 adult. Lastly, in the last scale there is 1 adult. How much does 1 adult weigh??