Answer:
Total of 9 lengths of 4 inches can be taken out from a board of 3 feet
Explanation:
length of board in feet = 3 ft
As
1 ft = 12 inches
So
Length of board in inch =

= 36 inches
Let no of 4 inches length be = x
The equation become

Total of 9 lengths of 4 inches can be taken out from a board of 3 feet