Answer:
Susan payed $30 for her purchase
Explanation:
Chicken: $12.36 per package (x2) = $24.72
Broccoli: $1.98 per pound (x1/2) = $0.99 +
Milk: $3.49 per gallon (x1) = $3.49
-and no added sales tax ____________
$29.20
If Susan got $0.80 in return, then she must have payed $30 to begin with.