



 
Hi Nathan, I don't know what formula you are looking for. I seldom use formulas. For this problem I see the entire mixture composed of 7 gallon sections, each section with 5 gallons of one chemical and 2 gallons of the other. Since there are 1400 gallons of solution there are 1400/7 = 200 of these sections. Each section has 5 gallons of the first chemical so in total there are 200 × 5 = 1000 gallons of this chemical. I hope this helps,  


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