A company charges $7 for a T-shirt and ships any order for $22. A school principal ordered a number of T-shirts for the school store. The total cost of the order was $1,520. How many T-shirts did the principal order?
О A.69
© B. 150
O C. 214
O D. 220
Let the number of T-shirts ordered be x.
The cost of the T-shirts is $7x.
The cost of shipping is $22.
Therefore, the total cost of the order is $7x + $22.
According to the problem, the total cost of the order is $1,520.
So, we have the equation $7x + $22 = $1,520.
Subtracting $22 from both sides of the equation, we get $7x = $1,498.
Dividing both sides of the equation by $7, we get x = 214.
The principal ordered 214 T-shirts.
Therefore, the answer is option C.