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Question
A box contains 5 apples, 6 oranges and 'x' bananas. If the probability of selecting an apple from the box is 1/3, then the number of bananas is ______.
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Solution
A box contains 5 apples, 6 oranges and 'x' bananas. If the probability of selecting an apple from the box is 1/3, then the number of bananas is 4.
Explanation:
Set the apple probability equal to the given value: \[\frac{5}{11+x}=\frac{1}{3}\].
Solving gives 15 = 11 + x, so x = 4 bananas.
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