Question

Colin and his sister Cathy are cleaning their house on Saturday morning. Their house has 9 rooms in it. They figure it takes one person about 8 minutes to clean one room. How long will it take them to clean the whole house if they work together the whole time?

Answer 1

Wouldn't it be 36 minutes?

Answer 2

Yeah I think.

Answer 3

I think it should be if you divide the time it takes one person by both of them, then it would be 4, and I suppose you'd just multiply that by the number of rooms.

Answer 4

Oh okay then c:

Answer 5

Yes.