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6. 12 man to do a job in 90 days . can d...

6. 12 man to do a job in 90 days . can do. 30 when the job starts 2 days after 2 men left work Diya and 8 men joined. remainder How many days will it take to complete the work? (1) 90 days (2) 60 days (3) 40 days (4) 50 days

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