Considering that an average elephant weighs between 2.7 tons to 4.5 tons, and eats an average 300 lbs per day minus the exception this would be a circus elephant, the elephant would weigh between 2.5-4.0 tons without the acrobat. Adding the acrobat would add an additional 110-140 lbs,(depends on if it's a fit male or female), the weight would add up to be 3.25 tons(+ or - .75tons ) + 125lbs (+ or - 15lbs) would come to the average Elephant weight.
P.S: I was bored
