1. Barry held out an invoice. "Look at this," he said. "One figure completely missing in the total amount. It's for two gross of tequats we got from Moon Imports." Joey explained, "Multiply by the unit price. There's no tax, and their pricing is the same whether you buy one or a thousand." "Fine, but I'm not sure of the unit price," Barry told him. "All this shows is eight blank four three pounds and thirty-six pence total. You tell me what digit should be where that blank is." Well?

Amount was 6227 pounds 83 pence

Amount was 8343 pounds 36 pence

Amount was 2981 pounds 10 pence