A saline solution has a concentration ratio of 3.5 milligrams of salt in 100 milliliters of solution. How many milligrams of salt will be needed to produce 500 milliliters of a saline solution having this same concentration?
A) 19.5 milligrams
B) 15 milligrams
C) 17.5 milligrams
D) 19 milligrams
E) 16 milligrams

Question

Quizplus · Accepted Answer

To maintain the same concentration ratio of 3.5 milligrams of salt per 100 milliliters of solution, for 500 milliliters, you multiply the concentration ratio by 5 (since 500 ml is 5 times 100 ml). Thus, 3.5 mg * 5 = 17.5 milligrams of salt.

A Saline Solution Has a Concentration Ratio of 3