A 20% acid solution is mixed with a 70% acid solution to get 100 liters of a 40% solution. If x = amount of 20% solution and y = amount of 70% solution, then 0.2x + 0.7y = ___ liters. 40
20
70
90

rx and sx

step-by-step explanation:

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

thats not a system of equations, that is a solution