Losing weight takes time. The ten year old may exercise for a little longer amount of time. but make sure you try not to disclude too much weight.
500 a day
Yes, anybody can. The question is if it's healthy for that 11 year old to lose weight.
2000-2500
current weight x 10 = calories to lose weight to maintain weight = 2000 to 2500 calories per day
A fifteen year old should not try and lose weight unless directed by a doctor. You should wait until you are your maximum height before deciding that you need to lose weight.
To lose weight cut down on calories to 1500 if a boy and 1200 if a girl, not just carbs
It depends on height and weight, but in general, the recommended calorie range for someone that age trying to lose weight would be anywhere from 1,500-1,800 calories a day.
yes
Staying below 32 carbs a day will help you lose weight. A 14 year old girl should consult her doctor before beginning a weight loss plan as this can effect hormones in a negative way.
An 11 year old should not be trying to lose weight unless it's for medical reasons and a doctor is following the weightloss
"Can" a 130 pound 12 year old lose weight, yes, but the question is "should" a 130 pound 12 year old lose weight. The answer to that depends on your height and build as well. It would be good to consult a physician if you are concerned about being over weight. They can also give you ideas on how best to lose weight for your age if losing weight is appropriate. Good luck.
If you are 11 years old, then you should not try to lose weight unless your doctor tells you to do so. You can harm your health. Engage in physical activities that you enjoy. You'll look and feel better, even if you do not lose any weight.