An inventory sheet shows 565 outlet boxes on January 1. On January 10, 145 boxes are taken out of stock. On January 14, 35 boxes are returned to stock. How many outlet boxes are in stock after January 14?

• A. 585
• B. 455
• C. 420
• D. 435

Answer: (B)

This problem tests inventory arithmetic—updating a running stock count with removals and additions. Start with 565 boxes. On January 10, 145 are taken out, so the stock becomes 565 minus 145 = 420. On January 14, 35 boxes are returned, increasing the stock to 420 plus 35 = 455. Therefore, there are 455 outlet boxes in stock after January 14.