A fruit grower can use two types of fertilizer in her orange​ grove, brand A or brand B. The amounts​ (in pounds) of​ nitrogen, phosphoric​ acid, and chloride in a bag of each brand are given in the table. Tests indicate that the grove needs at least 1800 pounds of phosphoric acid and at most 350 pounds of chloride. Answer parts​ (A) and​ (B) below.
Pounds per Bag
Brand Upper A
Brand Upper B
Nitrogen
6
5
Phosphoric Acid
6
6
Chloride
2
1
Question content area bottom
Part 1
​(A) If the grower wants to maximize the amount of nitrogen added to the​ grove, how many bags of each mix should be​ used? How much nitrogen will be​ added?
The grower should add

enter your response here bags of brand A and

enter your response here bags of brand B to maximize the amount of nitrogen added.