Mark M. answered • 04/17/18

Mathematics Teacher - NCLB Highly Qualified

140 lbs - 7 lbs = 133 lbs

133 lbs = 2,128 oz multiply lb by 16)

18 yrs = 6570 days

6570 days = 157,680 hrs

gain is 2128 oz / 157,680 hrs

Can you reduce and answer?