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3psilon

  • 3 years ago

In a list of 100 numbers , the fraction of numbers greater than 15 is (19/25) and the fraction of numbers less than 15 is (7/50). How many numbers in the list are equal to 15

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  1. 3psilon
    • 3 years ago
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    @Hero

  2. 3psilon
    • 3 years ago
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    Stupid mistakes :P

  3. kropot72
    • 3 years ago
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    Let the quantity of numbers equalling 15 = x \[(100\times \frac{19}{25})+(100\times \frac{7}{50})+x=100\] Now you just need to solve for x.

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