J 4. As a fund-raiser, the student council sold
T-shirts and sweatshirts. They sold a total
of 105 T-shirts and sweatshirts and raised
$1170. If the cost of a T-shirt t was $10 and
the cost of a sweatshirt s was $15, what
was the number of sweatshirts sold?
A 24
B 52
C 81
D 105