general math MCQ #340

Thirty men take 20 days to complete a job working 9 hours a day. How many hour a day should 40 men working for 20 days to complete the job?

general math MCQ #340

  1. Question 1

    Q1. Thirty men take 20 days to complete a job working 9 hours a day. How many hour a day should 40 men working for 20 days to complete the job?

    • A) 8 hrs.
    • B) 6 3/4 hrs.
    • C) 3.7 hrs.
    • D) 9hrs

    Answer: 6 3/4 hrs.

    Explanation: Total work = 30×9×20 = 5400 man-hours; 40 men×20 days×h = 5400 → h = 6.75 = 6¾ hrs.