How much 7% saline solution should Kent mix with 60 cubic centimeters (cc) of a 19% saline solution to produce an 11% saline solution?

x=120cc volume of 7% solution

Step-by-step explanation:

Saline solution(7% solution) +

Saline solution (19% solution) = Saline solution (11% solution)

Saline solution(7% solution): (0.07)(x)

x= unknown volume

Saline solution (19% solution): (0.19)(60)

60= given volume

Saline solution (11% solution)= (0.07)(x+60)

x+60= Total volume

solve for x

(0.07)(x) + (0.19)(60) = (0.11)(x+60)

0.07x +11.4 = 0.11x + 6.6

0.11x - 0.07x = 11.4 - 6.6

0.04x = 4.8

x = 4.8/0.04

x = 120 cc volume of 7% solution

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