This is a very old puzzle as can be seen by the use of farthings, and the cost of a meal at the time.
For those of you who are not familiar with pre-decimalisation money, and farthings in particular: there were twelve pennies in a shilling and four farthings in a penny.
So, onto the puzzle itself. A group visited a restaurant for a meal. Each person in the group ordered exactly the same meal, and thus the cost of each person's meal was identical. The total bill came to six shillings and one farthing.
How many people dined together in this group?
Answer at 9.00 on Monday