Question
Perry can paint 1 flat in 7 days. With Archie's help, they can paint the same flat in 6 days. How many days would Archie take to paint the flat alone?
4 m

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Perry can paint 1 flat in 7 days. With Archie's help, they can paint the same flat in 6 days. How many days would Archie take to paint the flat alone?