Question
A contractor was tasked with constructing a bridge
within 45 days. To complete the project, he initially hired 75 workers. However, after 40 days, he discovered that only 75% of the work had been completed. How many additional workers must he hire to ensure the remaining work is finished on schedule?Solution
Let the contractor employed ‘x’ more workers after 40 days. So according to question: (75 × 40)/0.75 = {(x + 75) × 5}/0.25 20x + 1500 = 4000 20x = 2500, x = 125 So, 125 more workers are required to complete the work on time.
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