Janina spends $30 each day for rent and uses $12 worth of supplies daily to run her pancake stand. If she sells each pancake for $2, how many pancakes must Janina sell each day to cover her expenses?
Janina spends $30+$12=$<<30+12=42>>42 each day for her pancake stand.
She must sell $42/$2=<<42/2=21>>21 pancakes each day to cover her expenses.
#### 21