SOLUTION: SHELLIE IS A GRADUATE STUDENT BREEDING OPIHI IN A LABORATORY SETTING. SHE FOUND THAT THE OPTIMAL SALT CONCENTRATION FOR HER EXPERIMENT TO SUCCEED IS 4%. IF SHE STARTS OFF WITH 10

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: SHELLIE IS A GRADUATE STUDENT BREEDING OPIHI IN A LABORATORY SETTING. SHE FOUND THAT THE OPTIMAL SALT CONCENTRATION FOR HER EXPERIMENT TO SUCCEED IS 4%. IF SHE STARTS OFF WITH 10      Log On


   

Question 1109331: SHELLIE IS A GRADUATE STUDENT BREEDING OPIHI IN A LABORATORY SETTING. SHE FOUND THAT THE OPTIMAL SALT CONCENTRATION FOR HER EXPERIMENT TO SUCCEED IS 4%. IF SHE STARTS OFF WITH 100 LITERS OF 2.5% SOLUTION, HOW MUCY 5.5% SOLUTION MUST SHE ADD TO CREATE HER TARGET SALT CONCENTRATION OF 4%?
Answer by greenestamps(13203) About Me  (Show Source):
You can put this solution on YOUR website!


The target percentage of 4.0 is exactly halfway between 2.5 and 5.5. That means the two ingredients must be mixed in equal amounts.

100 liters of 2.5% means she needs 100 liters of 5.5%.