Question
You need a 45% alcohol solution. On hand, you have a 150 mL of a 15% alcohol mixture. You also have 70% alcohol mixture. How much of the 70% mixture will you need to add to obtain the desired solution?
Answers
Steve
add up the amount of alcohol in each part. It must equal the alcohol in the final mixture:
.15*150 + .70x = .45(150+x)
.15*150 + .70x = .45(150+x)
Anonymous
368