Determine how much water needs to be evaporated from 15 kg of a 6% salt solution to produce an 8% salt solution

1.8 or

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

4932,9180,7625 are divisible by 9