how much weight should a 15 year old weight lifter be able to lift?

Question

what weight dumbell for bicep curls, bench press, etc...
p.s. - I'm 140 lbs.

Answer 1

You should be able to bench press 1 1/2 times your body weight. That would be 210 pounds. You should be able to leg press about 4 times your body weight, or 560 pounds. you should be able to curl from 45 pounds to 90 pounds.

Answer 2

Your weight is adequate for bench press.

Answer 3

at least your own body weight if you can lift more than that thats good