If Bill can buy 3 pairs of jeans and 2 shirts for $69 or 2 pairs of jeans and 3 shirts for $76, how much does one shirt cost? Pick:
A) $10
B) $12
C) $13.20
D) $15
E) $18
3J + 2S = 69   2J + 3S = 76   ----------------   5J + 5S = 145 ----(divide by 5)---&gt; J + S = 29   3J + 2S = J + 2(J + S) = J + 58 = 69 ---&gt; J = 11   3*11 + 2S = 69   33 + 2S = 69   2S = 36   S = 18   Answer: $18
<result>E</result>
If Bill can buy 3 pairs of jeans and 2 shirts for $69 or 2 pairs of jeans and 3 shirts for $76, how much does one shirt cost?