Time & Work · Question 12 · Hard
Time & Work question 12
Deepak can complete a job in 30 days and Farhan in 40 days. They start together, but Deepak leaves 5 days before the job is finished. In how many days is the job completed in total?
- 17 1/7 days
- 25 days
- 20 days
- 22 days
Answer and explanation
Answer: C. 20 days
Explanation: If the job takes t days, Deepak works t − 5 days: (t − 5)/30 + t/40 = 1. So 4(t − 5) + 3t = 120, giving 7t = 140 and t = 20.
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