Question

If a 7% saline solution and a 4% saline solution are mixed to make 500 milliliters of a 5% saline solution, how much of each solution, to the nearest milliliter, is needed?

Answer 1

which one
170 milliliters of the 10% solution and 340 milliliters of 4% solution
155 milliliters of the 10% solution and 300 milliliters of 4% solution
110 milliliters of the 10% solution and 210 milliliters of 4% solution
167 milliliters of 7% solution and 333 milliliters of 4% solution

Answer 2

d