Let the weights of Chetan, Vipul, and Mohan be C, V, and M respectively. The average weight of Chetan, Vipul, and Mohan is 46 kg , so: (C+V+M)∕3=46 ⇒C+V+M=46×3=138( Equation 1) The average weight of Chetan and Vipul is 40 kg , so: (C+V)∕2=40 ⇒C+V=40×2=80( Equation 2) The average weight of Vipul and Mohan is 44 kg , so: (V+M)∕2=44 ⇒V+M=44×2=88( Equation 3) Now, we have the following system of equations: Equation 1: C+V+M=138 Equation 2: C+V=80 Equation 3: V+M=88 To find the weight of Vipul (V), subtract Equation 2 from Equation 1: (C+V+M)−(C+V)=138−80 ⇒M=58 Now, substitute M=58 into Equation 3: V+58=88 ⇒V=88−58=30