How to Calculate Solution Mixture for Iodine Concentration - 20% and 70%

[Richay]

Sarah wants to mix 400 liters of a solution that is 57.5 iodine. She has two solutions available. One is 20% iodine and the other is 70% iodine. How many liters of both should Sarah use?

Answer in the form: 20% = ?, 70% = ?

 

[Gokul43201]

Richay, you've just read the other thread where you've been asked to show your work first. Please read the posting guidelines. We can't help you unless you first show your work.

 

[Tide]

Look up the term "alligation" on Google - you will find a simple and fast way of dealing with concentration problems.