Question

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

Answer 1

19/25(100) = 1900/25 = 76 (greater then 15)

7/50(100) = 700/50 = 14 (less then 15)

100 - (76 + 14) = 100 - 90 = 10

There are 10 numbers equal to 15.