Step-by-step explanation:
Let x and y pounds of Candy A and Candy B be mixed respectively.
Rate of Candy A and Candy B are $0.78 and $1.33 per pound respectively.
Now,
(A) x + y = 8
(B) 0.78x + 1.33y = 7.84
Solving both equations :
0.33y = 1.6
x = 3.16 pounds of Candy A
y = 4.84 pounds of Candy B