Find number abc
If ca5bc + 8b4b5 = abc054 find number abc. Multiple solutions may exist.Correct answers: 18
The first user who solved this task is Nasrin 24 T.
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Cast iron plowIn 1797, Charles Newbold, born Chesterfield, NJ (1780), was issued the first US patent for a cast-iron plow, at a time when the cast iron plow of James Small had to be imported from Scotland. On Newbold's plow the share, landslide and moldboard were cast in one piece, then wooden handles and beam added. Local farmers, though, rejected its use, fearing the iron might poison the soil! Eventually it was the improvements made by others that brought successful cast iron then steel plows to market. |