If 2 guy paint 2 room in 2 hour. If 18 room use 6 hour. How many people we use?

Question

anonymous · Answer

6 guys are needed

anonymous · Answer

1 guy paint 1 room / 2h
2 guy paint 2 room / 2h
3 guy paint 3 room / -2h-

if in period of 2h, one person can paint one room
then in period of 2h, two person can paint two room

more person dont change speed of one person

this is wrong:
3 guy paint 3 room / 3h

its wrong. if take one more person, can paint one more room.
doesnt take one more hour, just one additional room in 2h

anonymous · Answer

because additional person can paint from beginning

anonymous · Answer

I want to make a joke about needing a lot of guys, but im to lazy

kc_kennylau · Answer

2 guys 2 hours --> 2 rooms
6 guys 6 hours --> 2 rooms
X guys 6 hours --> 18 rooms

anonymous · Answer

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