Explanation:
in the strange US system there is suddenly a metric relationship :
1 ton = 2000 pounds.
FYI - an actual (metric) ton is 1000 kg, which is
2,204.6226218488 pounds.
anyway, as 1 ton = 2000 pounds, then 4 tons = 4×2000 = 8000 pounds.
8000 pounds cost $28,080.00.
1 pound costs therefore
28080/8000 = $3.51