Puzzles

Dudeney's deal in apples

I paid a shilling for some apples, but they were so small the seller threw in two extra for the same money. That worked out to exactly a penny a dozen less than the price he'd first asked. How many apples did I walk away with?

Reveal the answer

Eighteen apples. He first offered them at ninepence a dozen, which comes to 16 apples for a shilling. Throwing in two more made it 18 apples for that same shilling, at eightpence a dozen — exactly one penny a dozen less, as stated. From Henry Dudeney's Amusements in Mathematics (1917), puzzle no. 21, 'A Deal in Apples.'

— Henry Ernest Dudeney, Amusements in Mathematics — 1917, puzzle 21, 'A Deal in Apples'

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