Alex has some new shirts. Joe has 3 more new shirts than Alex. Ben has eight more new shirts than Joe. If Ben has 15 new shirts, how many new shirts does Alex have? Let's think step by step and output the final answer after "####".
user
Joe has 15-8=<<15-8=7>>7 new shirts.
Alex has 7-3=<<7-3=4>>4 new shirts.
#### 4
Alex has some new shirts. Joe has 3 more new shirts than Alex. Ben has eight more new shirts than Joe. If Ben has 15 new shirts, how many new shirts does Alex have?
train