Martha takes her niece and nephew to a
concert. She buys T-shirts and bumper stickers
for them. The bumper stickers cost $1 each.
Martha's niece wants 1 shirt and 4 bumper
stickers, and her nephew wants 2 shirts but no
bumper stickers. If Martha's total is $67, what is
the cost of one shirt? ***Enter just the number
without a dollar sign.