A purchase of 2,500 feet of THHN #14 wire is made for a job. On November 1, 1,365 feet of this wire are used. On November 3, an additional 830 feet are used. How many feet of wire are left after November 3?

• A. 305
• B. 520
• C. 170
• D. 0

Answer: (A)

This question tests how to track remaining stock by subtracting quantities. Start with the total wire length: 2,500 feet. Subtract what was used first: 1,365 feet, leaving 1,135 feet. Then subtract the additional 830 feet used: 1,135 − 830 = 305 feet remaining. You can also add the used amounts (1,365 + 830 = 2,195) and subtract from the total (2,500 − 2,195 = 305); both ways give the same result. Therefore, 305 feet remain.