If a shipment weighs 4000 pounds, how many tons does it weigh?

Step 1 ：We know that 1 ton is equivalent to 2000 pounds.

Step 2 ：To find out how many tons 4000 pounds is, we divide 4000 by 2000.

Step 3 ：\( \frac{4000}{2000} = 2 \)