no you are underweight you should eat vegetables not oily things like samosa etc if you are 12 year old you should gain your weight at least 20 pounds more ok.
No. The average weight for a 12 year old girl, is 90 pounds. You are slightly underweight, and the doctor may recommend adding more vegetables and/or meat to your diet.
On the internet there are weight calculators that basically take your Gender, height, age and weight then calculate if your over, normal or underweight.