## 3psilon Group Title 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 one year ago one year ago

1. 3psilon Group Title

@Hero

2. 3psilon Group Title

Stupid mistakes :P

3. kropot72 Group Title

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.