Finding Pressure of gas in syringe when volume changes but m doesn't. How do I solve it?

On a day when atmospheric pressure is 730 torr and room temperature is 20 oC, a plastic syringe with an inside cross-sectional area of 1 in2 is filled to the 50-mL mark with helium gas. The syringe plunger is pushed against a bathroom scale until the volume of the gas has been decreased to 30 mL. uming ideal conditions, what is the scale reading in pounds?