150 pounds
85 lbs.
130 Pounds
35-37 lbs
the weight he should weigh is 105 pounds
Probably 120 will be the best weight for your height.
85 pounds
90 pounds
4 ' 0 , 30 kg.
About 95-100 lb.
120-140 pounds
70ish
85 to 90 pounds is the average weight for a 13-year-old boy. However, this might vary somewhat depending on build.