A.
12 sq ft paper * $1 = $12.00
4 ft wood * $3 = $12.00
14 yd string * $2 = $28.00
total is 12 + 12 + 28 = $52.00
B.
$52 * 4 kites = $208.00 total cost
12 sq ft paper per kite * 4 kites = 48 sq ft paper
4 ft wood per kite * 4 kites = 16 ft wood
14 yd string per kite * 4 kites = 56 yd string