Three brothers share a family sport: A non-stop marathon The oldest one is fat and short And trudges slowly on The middle brother’s tall and slim And keeps a steady pace The youngest runs just like the wind, A-speeding through the race “He’s young in years, we let him run,” The other brothers say “‘Cause though he’s surely number one, He’s second, in a way.”
1 lb = A 2 lbs + A = B 3 lbs = B 4 lbs = A + B 5 lbs + A + B = C 6 lbs + B = C 7 lbs + B = A + C 8 lbs + A = C 9 lbs = C 10 lbs = A + C 11 lbs + A = B + C 12 lbs = B + C 13 lbs = A + B + C 14 lbs + B = D 15 lbs + B = A + D 16 lbs + A = D 17 lbs = D 18 lbs = A + D 19 lbs + A = B + D 20 lbs = B + D 21 lbs = A + B + D 22 lbs + A + B = C + D 23 lbs + B = C + D 24 lbs + B = A + C + D 25 lbs + A = C + D 26 lbs = C + D 27 lbs = A + C + D 28 lbs + A = B + C + D 29 lbs = B + C + D 30 lbs = A + B + C + D