If he has a lot of muscle 120 pounds iff not about 100 hope this helped :)
For a boy about 160 to 170, would be about average but that is not including muscular weight depending if he is athletic or not.
I would say from about 130 to 160
probably 70- 85 pounds depending on how athletic you are
the average time for a 13-14 year old boy to run the 100 meter is about 15 seconds if you are athletic 20 seconds for a non athletic boy
Probably around from 135 pounds to 145 pounds, I'm fit and i weigh 135 pounds
the weight for a 135cm boy is 33kg
what is the average weight of a 9 year old boy
what is the average weight for a 7 year old boy
The weight depends on the age.
440 lbs
about 5'4 if you are athletic
i have asked my doctor about this and he said this, "The average weight is about 80 lbs but if you are an athletic and sporty 11 year old you should be roughly 150 lbs. it depends mostly on muscle and fat."