Question
A contractor is hired to complete a road in 40 days and
initially employs 40 workers. After 24 days, he realizes that only one-third of the work has been completed. How many additional workers must he hire to finish the remaining work 4 days ahead of schedule?Solution
Let the number of extra men be ‘m’.
(40 × 24)/(1/3) = [(40 + m) × 12]/(2/3)
m = 120
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