1. Jim stopped and pointed back to the table. "Look, Dad. There's still some money on the plate," he said. "You gave the lady two pounds and she brought back your change. How much did it cost?" "That's extra. A tip for looking after us so nicely," Tom explained. "But if our bill had been 20 pence more, the change would have been only two-thirds what it was." Well?

1 pound and 50 pence

1 pound and 30 pence

1 pound and 40 pence