Question

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

Answer 1

5.9 hours

Explanation:

1/13+1/11=1/x

looking for x

x= 5.9

are you clear?