… 2 pounds of butter at £1.10 a pound and 2 bars of soap at 83 pence each. How much does that come to?”

“Twenty-two pounds and thirty-six pence,” replied the clerk.

“If I gave you three ten pound notes, how much change would I get?”

“Seven pounds and sixty-four pence.”

With that the boy walked out saying:”Thanks! That’s my arithmetic homework done for tomorrow.”