Question

Please help, ASAP:
Five liters of a20% salt solution was mixed with five liters of a70% salt solution. Find the concentration of salt in the mixed solution?

Answer 1

the concentration of the mixed solution would be 45%

Answer 2

Answer: 45%

Step-by-step explanation:

$\underline{\qquad \qquad\quad|\text{Quantity}|\quad\%\quad|\text\quad{Qty } \times\text{\%}\qquad}\\\underline{\text{Solution A }|\text{5 liters}\quad|\text{0.20}\quad|5\times0.20=1.00}\\\underline{\text{Solution B }|\text{5 liters}\quad|\text{0.70}\quad|5\times0.70=3.50}\\\text{Mixture }\quad|\text{ 10 liters }|\quad\text{x}\quad|\qquad\text{4.50}$

10x = 4.50

  x = .45

    = 45%