Question

working 7 hours a day 45 men took 40 days to finish a job so how long will 25 men will take working 8 hours to finish the same job​

Answer 1

Answer:

63 days

Step-by-step explanation:

Working 7 hours a day, 45 men took 40 days.

Working 1 hour a day, 45 men will take 40 × 7 days.

Working 1 hour a day, 1 man will take 40 × 7 × 45 days.

Working 8 hours a day, 1 man will take 40×7×45/8 days = 5 × 7 × 45 days.

Working 8 hours a day, 25 men will take 5×7×45/25 days = 7 × 9 days = 63 days