Question

http://mdk12.org/scripts/hsa_practice_taking.plx?session_id=20519409&order_num=1&q=5%2F4&submit.x=11&submit.y=8

Answer 1

You got to add the columns, subtract corresponding columns and find the smallest resulting number.

Answer 2

For example, there were 250 small at the beginning and now there are 140 left. So, 110 small shirts sold. Find for other sizes and you will be able to find the least value from there.