To find the cost of one shirt, we can divide the total cost by the quantity of shirts.
Let's take the cost of 6 shirts as an example:
Cost for 6 shirts = $18
Cost for one shirt = Total cost / Quantity = $18 / 6 = $3
To confirm the price for the other quantities, we can do the same calculations:
- For 5 shirts: $15 / 5 = $3
- For 4 shirts: $12 / 4 = $3
- For 3 shirts: $9 / 3 = $3
In each case, the cost for one shirt is consistently $3.
Therefore, the cost for one shirt is $3.