Bruce can make 15 batches of pizza dough using a sack of flour. If he uses 5 sacks of flour per day, how many pizza doughs can he make in a week?
He can make 15 x 5 = <<15*5=75>>75 batches of pizza dough per day.
Therefore, Bruce can make 75 x 7 days in a week = <<75*7=525>>525 batches of pizza dough in a week.
#### 525