it takes 10 people 5 days to complete a piece of work at a factory when working 2 hours a day working at the pace, how many days will it takes 2 people to do the same work, if they are working 5 hours a day
Answers
(10 people) * (2 hours / day)
= 20 man-hours / day
So,
(2 people) * (5 hours / day)
= 10 man-hours / day
10 people : 5 days : 2 hours a day
Find the number of days needed if only 1 person is working:
10 people : 5 days : 2 hours a day
10 ÷ 10 people : 5 x 10 days : 2 hours a day
1 person : 50 days : 2 hours a day
Find the number of days needed if only 2 people are working:
1 person : 50 days : 2 hours a day
1 x 2 people : 50 ÷ 2 days : 2 hours a day
2 people : 25 days : 2 hours a day
Find the number of days needed if they work only 1 hour a day:
2 people : 25 days : 2 hours a day
2 people : 25 x 2 days : 2 ÷ 2 hours a day
2 people : 50 days : 1 hours a day
Find the number of days needed if they work 5 hour a day:
2 people : 50 days : 1 hours a day
2 people : 50 ÷ 5 days : 1 x 5 hours a day
2 people : 10 days : 5 hours a day
Answer: They need 10 days