Please solve this quick word problem?
2 Answers
Jan 14, 2018
12 hours
Explanation:
Assume that all the workers have the same speed and efficiency.
If it takes 8 hours for 15 people, it will take 3 times more time for 1/3 of the people (i.e. 5 people) to complete the work. Which means 24 hours.
However, the question asks for the time needed for HALF the work. So, if it takes 24 hours for 5 people to FINISH the work, it will take then half the time to finish half the work (i.e. 12 hours).
Jan 14, 2018