TiyonU742300 TiyonU742300
  • 03-11-2022
  • Mathematics
contestada

how many hours would it take for sally and steve?

how many hours would it take for sally and steve class=

Respuesta :

EmerickG562014 EmerickG562014
  • 03-11-2022

Answer:

It would take 2.7 hours

Explanation:

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

[tex]\frac{1}{8}+\frac{1}{4}=\frac{8+4}{8(4)}=\frac{12}{32}=0.375[/tex]

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

[tex]\frac{1}{0.375}=2.7\text{ hours}[/tex]

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

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