What is 5 X 5 pence pieces?

Answer 1

55

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Not right, I fear. Try this answer:

5 pieces, being 5p each, amount to a sum of 25p. The 'p' is simply an abbreviation for 'new pence', equal to the old shilling.

Just like 5 nickels, old boy, which make a quarter dollar in value, in American currency.