Henry Ernest Dudeney/Modern Puzzles/1 - Concerning a Cheque

Modern Puzzles by Henry Ernest Dudeney: $1$

Concerning a Cheque

A man went into a bank to cash a cheque.

In handing over the money the cashier, by mistake, gave him pounds for shillings and shillings for pounds.

He pocketed the money without examining it, and spent half a crown on his way home, when he found that he possessed exactly twice the amount of the cheque.

He had no money in his pocket before going to the bank, and it is an interesting puzzle to find out what was the exact amount of that cheque.

Variant

A man went into a bank to cash a check.

In handing over the money the cashier, by mistake, gave him dollars for cents and cents for dollars.

He pocketed the money without examining it, and spent a nickel on his way home.

He then found that he possessed exactly twice the amount of the check.

He had no money in his pocket before going to the bank.

What was the exact amount of that check?

Sources

• 1926: Henry Ernest Dudeney: Modern Puzzles ... (next): Arithmetical and Algebraical Problems: Money Puzzles: $1$. -- Concerning a Cheque