A contractor agrees to complete a building in 120 days. He employs 75 workers. After 80 days, only half of the work is completed. To avoid a penalty and finish the remaining work on time, how many additional workers must he employ?
Show answer & explanation
Correct answer: B
Explanation
75 × 80 = W × 40
W = (75 × 80)/40 = 150
Additional workers = 150 − 75 = 75