Aarav = xBhavna = x+40Chetan = x+80total 720A180B200C220D240 Step-by-Step SolutionAarav = x, Bhavna = x+40, Chetan = x+80.x+(x+40)+(x+80)=720,3x+120=720,3x=600,x=200.Answer: B) 200