Gershon mixes two plant fertilizers. How much fertilizer with 15% nitrogen should be mixed with 2 oz of fertilizer with 10% nitrogen to produce a fertilizer that is 14% nitrogen?

Question

its a math equation

Answer 1

15x + 10(2) = (14)(x+2)

15x = 14x + 28-20

15x -14x = 8

x = 8 ounces of 15% mixed with 2 ounces of 10% to get 10 ounces of 14%

15-14 = 1

14 -10 = 4

4 times as much 15% is needed as 10%

8/2 = 4