When a store had sold 40% of the shirts that were on display, they brought out another 20 from the stockroom. The store likes to keep at least 140 shirts on display. The manager wrote the inequality:
This inequality represents the condition that after selling 40% of the shirts on display (0.40𝑥) and adding 20 shirts from the stockroom, the total number of shirts on display should be greater than or equal to 140.
