Answer:
5 liters
Step-by-step explanation:
Let x represent the number of liters of the 17% solution, and represent the percentages as decimal values:
0.1(2) + (0.17)(x) = 0.15(x + 2)
Simplify:
0.2 + 0.17x = 0.15x + 0.3
Solve for x:
0.17x = 0.15x + 0.1
0.02x = 0.1
x = 5
So, you would need 5 liters of a 17% solution to get a 15% solution
