CAT 1995 — QA Question 20
Man Days (single group of people)Easy
A group of men decided to do a job in 8 days. But since 10 men dropped out every day, the job got completed at the end of the 12th day. How many men were there at the beginning?
Answer & solution
Correct answer: 165
165
- B
175
- C
80
- D
90
Solution
If x men were there on day one, there would be (x – 110) men on the 12th day.
Hence, on an average, there were (x – 55) men.
The job takes times the normal time.
Hence, the average number of people =
Hence, x = 165