Question

How many hours would it take for sally and steve?

Answer 1

It would take 2.7 hours

Step-by-step explanation:

To know how many hours they take together, we need to add the inverse of the time that they take to paint, so

`(1)/(8)+(1)/(4)=(8+4)/(8(4))=(12)/(32)=0.375`

Because Sally takes 8 hours and Steve takes 4 hours to paint the room. Finally, we need to find the inverse of 0.375, so

`(1)/(0.375)=2.7\text{ hours}`

So, they would take 2.7 hours to paint the room.