H. E. Dudeney, Amusements in Mathematics (1917) No. 39 · Puzzles · Money puzzles
The Costermonger's Puzzle
"How much did yer pay for them oranges, Bill?"
"I ain't a-goin' to tell yer, Jim. But I beat the old cove down fourpence a hundred."
"What good did that do yer?"
"Well, it meant five more oranges on every ten shillin's-worth."
Now, what price did Bill actually pay for the oranges? There is only one rate that will fit in with his statements.
H. E. Dudeney, Amusements in Mathematics (1917) · No. 39
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