College algebra

Question

In a chemistry class, 6 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?

Answer 1

0.04(6) + 0.1s = 0.06(s + 6)

0.24 + 0.1s = 0.06s + 0.36

0.04s = 0.12

s = 3

 

You need 3 liters of the 10% solution.