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- Thread starter gazparkin
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- Mar 1, 2012

- 639

1 house decorated by 10 people in 6 days means it takes 60 people-days (same as 60 days for 1 person to finish decorating the house)

(60 people-days to finish a house)/(4 people working) = 15 days to finish

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Thanks for this Skeeter. So the calculation is people X days (in the original calculation) then divide by however number of people are in the question?

1 house decorated by 10 people in 6 days means it takes 60 people-days (same as 60 days for 1 person to finish decorating the house)

(60 people-days to finish a house)/(4 people working) = 15 days to finish

- Jan 29, 2012

- 1,151

(Also, this is assuming that each person works at the same rate no matter how many people there are. If "decorating" involved lifting some object so heavy it takes 5 people to lift it, 4 could never finish!)