MATH-UA 120 Lecture Notes - Lecture 13: Nth Root, Antifreeze
Document Summary
A doctor wishes to obtain 800ml of a 7% solution of boric acid by mixing 4% and. If you"re confused af make a chart. The question is adking for a number of ml of 4% and 13% solutions of boric acid to be used. Let x = number of ml of 4% solution and that means 800-x is 12% solution since there is 800 ml in total. ml of solution * Now it is super easy to read and super easy to understand and super easy to solve. Now we can make an equation adding everything on the last column. I multiplied by 100 get rid of decimals. 500ml in 4& and 300 in 12%. As you noticed before there is a pattern with mixture problems. Made a chart so you can visualize: ml of solution * Now we look at the last column and find x or the amount of pure antifreeze.
