Sixty-for men working 8 hrs a day plan to complete a piece of work in 9 days. However, 5 days later they found that they had completed only 40% of the work. They now wanted to finish the remaining portion of the work in 4 more days. How many hours per day should they need to work in order to achieve the target?
  • a)
    11
  • b)
    12
  • c)
    13
  • d)
    15
Correct answer is option 'A'. Can you explain this answer?

Related Test


  ► 40% work in 40h → 60% work in 60h.
  ► Hence, working hours = 60 / 4 = 15 h

Ravi Shankar
3 days ago
64*8*5 / .4 = 64*8*x / .6 this where x is the hours per day they should work in order to finish the remaining work.
Thus option d 15 hrs is the right answer.

40% work in 40h → 60% work in 60h. Hence, working hours = 60 / 4 = 15 h
40% work in 40h → 60% work in 60h. Hence, working hours = 60 / 4 = 15 h