Abe's Wholesale Fish reached a verbal agreement with Joseph's Fisheries to buy from them 2 tonnes of cod for $7,500 per ton per week for ten weeks. Abe drew up a written version of the contract and both parties signed it. Shortly after the first delivery, Joseph received a cheque from Abe for $10,400 ($5.700 per ton) in full settlement of the account, and discovered the first two digits of the amount per ton had been transposed (reversed - reading $5,700 rather than $7,500) and neither party had noticed it at the time. Discuss what Abe may do in this case.