Question
If Neave and Will paint a house, they take 39 days to finish painting. If Zeph and Neave paint the same house, they take 3 days to finish painting. If Will and Julian paint the same house, they take 13 days to finish painting. How many days do Zeph and Julian take to paint the house if they work together?
4 m

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If Neave and Will paint a house, they take 39 days to finish painting. If Zeph and Neave paint the same house, they take 3 days to finish painting. If Will and Julian paint the same house, they take 13 days to finish painting. How many days do Zeph and Julian take to paint the house if they work together?