The bat costs $1.00 more than the ball. Is your knee-jerk response that the ball costs 10 cents? If the ball costs 10 cents, then the bat would cost $1.10, which would bring the total to $1.20. The correct answer is the ball costs 5 cents and the bat $1.05. However, why so many people get it wrong is due to a psychological trap we all fall into sometimes.

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Persons: Shane Fredrick, Fredrick