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Liz can paint a house in 13 hours. Carlos can paint the same house in 11 hours. How long would it take to work together?

5 hours and 40 min
5 hours and 13 min
5 hours and 22 min
5 hours and 58 min

Respuesta :

Answer:

5.9 hours

Step-by-step explanation:

1/13+1/11=1/x

looking for x

x= 5.9

are you clear?