Answer:
The actual sofa is 60 inches or 5 feet long.
Explanation:
1. Let's review all the information given for solving this question:
Scale factor for Maria's doll house furniture = 1:8
Size of the sofa in Maria's doll house = 7 1/2 inches
2. Let's find the size of the real sofa
Size of the real sofa = 7 1/2 * 8
Size of the real sofa = 60 inches long.
Size of the real sofa = 60/12 feet (1 feet = 12 inches)
Size of the real sofa = 5 feet long.