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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

Mathematics
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Stupid mistakes :P
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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