Question 1025706

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 45% salt and Solution B is 70% salt. She wants to obtain 70 ounces of a mixture that is 55% salt. How many ounces of each solution should she use?

solution A = x ounces
Solution B = x ounces

thank you to whoever answers :) 
<pre>{{{highlight_green(system(matrix(2,5, 42, oz, of, Solution, A, 28, oz, of, Solution, B)))}}}