A chemical company has in storage a 15% solution and a 25% solution of disinfectant. How many gallons of each should be used to make 50 gallons of 22% solution?
Let's make
x= amount of 15% solution
y = amount of 25% solution

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price