Question:medium
A woman sells to the first customer half her stock and half an apple, to the second customer half her remaining stock and half an apple, and so on to a third and fourth customer. She finds she has 15 apples left. How many apples did she have originally?
A woman sells to the first customer half her stock and half an apple, to the second customer half her remaining stock and half an apple, and so on to a third and fourth customer. She finds she has 15 apples left. How many apples did she have originally?
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For "half plus half" problems, working backward by adding 0.5 and doubling at each step is much faster than setting up a forward equation.
Updated On: Mar 27, 2026
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The Correct Option is B
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