Concentration problems

1. Jun 19, 2006

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% = ?

2. Jun 19, 2006

Gokul43201

Staff Emeritus