Ow you're 17, than your weight is good sorry
The ideal weight is your length minus 110 cm, in your case 49 is you ideal weight.
i read somewhere that ideal-weight is equal to (height - 1m)..<br />
in your case (1.60m - 1m = 60kg)
Yep..59kg is good !
According to this calculator, your weight is good for your height. <br />
Im 1.60m tall and weight 53kg, what's your ideal weight