Answer: the number of pounds of chamomile tea that must be mixed is 10
Explanation:
Let x represent the number of pounds of chamomile tea that must be mixed.
The chamomile tea costs 18.20 per pound. This means that the cost of x pounds is 18.2 × x = 18.2x
The orange tea costs 12.22 per pound. This means that the cost of 16 pounds would be
16 × 12.22 = 195.52
The mixture costs 14.52 per pound. This means that the total cost of the mixture made is
14.52(16 + x)
Therefore
18.2x + 195.52 = 14.52(16 + x)
18.2x + 195.52 = 232.32 + 14.52x
18.2x - 14.52x = 232.32 - 195.52
3.68x = 36.8
x = 36.8/3.68
x = 10