This familiar money puzzle catches people who answer too quickly.
A bottle and cork cost $1.10 together, and the bottle costs exactly $1 more than the cork.
If the cork cost 10 cents, the bottle would cost $1.10, making the total $1.20. So that cannot be right.
Let the cork cost 5 cents. Then the bottle costs $1.05. Together they cost $1.10.
Answer: $0.05.
The key is remembering that the $1 difference is between the two prices, not between the bottle price and the total.


