Answer:
actual length of the second wall is 43.2 ft
Step-by-step explanation:
Let x be the actual length of the second wall
Write measurements in ratios with feet to inches:
First wall: 12 : 2.5 = 12/2.5
Second wall: x : 9 = x/9
Equate the two fractions and solve for x:
12/2.5 = x/9
Multiply both sides by 9: 43.2 = x
Therefore, the actual length of the second wall is 43.2 ft
