Answer:
40 cm
Step-by-step explanation:
Given the ratio of the pieces is 2 : 3 : 5 = 2x : 3x : 5x ( x is a multiplier )
Since C is longer than B by 8 cm , then
5x = 3x + 8 ( subtract 3x from both sides )
2x = 8 ( divide both sides by 2 )
x = 4
Thus
2x = 2 × 4 = 8
3x = 3 × 4 = 12
5x = 3x + 8 = 12 + 8 = 20
length of piece of wood = 8 + 12 + 20 = 40 cm
