If Bill can buy 3 pairs of jeans and 2 shirts for $69 or 2 pairs of jeans and 3 shirts for $71, how much does one shirt cost?  Select.
A) $10	B) $12	C) $13.20	D) $15	E) $16.80
3J + 2S = 69   2J + 3S = 71   ----------------   5J + 5S = 140 ----(divide by 5)---&gt; J + S = 28   3J + 2S = J + 2(J + S) = J + 56 = 69 ---&gt; J = 13   3*13 + 2S = 69   39 + 2S = 69   2S = 30   S = 15   Answer: $15
<result>D</result>
If Bill can buy 3 pairs of jeans and 2 shirts for $69 or 2 pairs of jeans and 3 shirts for $71, how much does one shirt cost?