A wallpaper hanger requires 6 h to hang the wallpaper on one wall of a room. a second wallpaper hanger requires 4 h to hang the same amount of wallpaper. the first wallpaper hanger works alone for 3 h and then quits. how long will it take the second hanger, working alone, to finish papering the wall?
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Home » Mathematics » A wallpaper hanger requires 6 h to hang the wallpaper on one wall of a room. a second wallpaper hanger requires 4 h to hang the same amount of wallpaper. the first wallpaper hanger works alone for 3 h and then quits.