The given question is incomplete and has the following options
1) 35 t-shirts and 15 sweatshirts
2) 32 t-shirts and 18 sweatshirts
3) 25 t-shirts and 20 sweatshirts
4) 22 t-shirts and 22 sweatshirts
5) 15 t-shirts and 25 sweatshirts
Answer:
total money to be spent on clothing = $900
the only possible combination for this will be
25 t shirts and 20 sweatshirts
because 25*12 + 20 * 30 = 900