Female student: standard weight = (height-105)×0.92.
When the actual weight exceeds 10% ~ 20% of the standard weight, it is overweight, 20% above the standard weight is obese, 20% below the standard weight is emaciation, and 20% below the standard weight is severe emaciation.
Girl's height160cm (160-105) * 0.92 = 50.6, which is 50 kg. However, from the current aesthetic point of view, if you 1.6 meters, you will look slimmer if you weigh about 90 kg, more symmetrical if you weigh 95 kg, and fuller if you weigh 100 kg. Look at your own evaluation!