Kamal made a scale drawing of a house. The scale of the drawing was 7 inches : 3 feet. A rug in the hallway is 6 feet long in real life. How long is the rug in the drawing?
inches
First, convert the length of the rug from feet to inches: 6 feet * 12 inches/foot = <<6*12=72>>72 inches
Then divide the length of the rug in real life by the scale factor to find the length in the drawing: 72 inches / (3 feet / 7 inches) = <<72/(3/7)=168>>168 inches. Answer: \boxed{168}.