Answer : The correct option is, (D) 60
Step-by-step explanation :
First we have to calculate the area of room.
Area of room = Area of big rectangle + Area of small rectangle
Area of rectangle = Length × Width
Area of room = (40 × 12) + (20 × 12)
Area of room = 720 square feet
Now we have to calculate the number of linear feet will he need to buy.
Number of linear feet = [tex]\frac{\text{Area of room}}{\text{Width of carpet strips}}[/tex]
Number of linear feet = [tex]\frac{720}{12}=60[/tex]
Thus, the number of linear feet will he need to buy is, 60
