A store buys 4 sweaters for $20 and sells them for $136. How much profit does the store make per sweater?

The store makes a profit of $116 per sweater.

Profit per sweater = Selling price per sweater - Cost price per sweater
Profit per sweater = $136 - $20
Profit per sweater = $116

Therefore, the store makes a profit of $116 per sweater.