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The optimum weight for an 11 year old boy is 77 lbs.; for girls, 79.2.

actually person ^^^^^^^ umm....it all depends on the height. im 5 foot and im 11 years old. im 108 pounds. the average 11 year old weighs about 70-95 pounds. but they are all probably baby fat that we dont need to be worrying about until we grow but we will lose them.

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13y ago

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