Answer:
The total length of the molding is 21 feet and 6 inches
Explanation:
* Lets explain how to solve the problem
- The length of the two pieces are 8 feet 7 inches and 12 feet 11 inches
- Each foot has 12 inches
- Lets change the lengths of the two pieces to inch
# First piece 8 feet 7 inches
∵ 1 foot = 12 inches
∴ 8 feet 7 inches = 8 × 12 + 7
∴ 8 feet 7 inches = 96 + 7
∴ 8 feet 7 inches = 103 inches
# Second piece 12 feet 11 inches
∵ 1 foot = 12 inches
∴ 8 feet 7 inches = 12 × 12 + 11
∴ 8 feet 7 inches = 144 + 11
∴ 8 feet 7 inches = 155 inches
- To find the total length add the two answers
∴ The total length of the molding = 103 + 155 = 258 inches
- Divide the answer by 12 to change it to feet
∵ 258 ÷ 12 = 21.5 feet
- To change it to feet and inch multiply 0.5 feet by 12
∵ 0.5 × 12 = 6 inches
∴ The total length of the molding is 21 feet and 6 inches