The length of a stick is 2 m 4 cm long. Eva cut the stick into 3 pieces. The length of the first piece of the stick is 64 cm. The length of the second piece of the stick is 1 m shorter than the third piece. What is the length of the third piece of stick?
1 m = 100 cm

Difference in the length between the second and the third piece
= 1 m
= 1 x 100
= 100 cm

Length of a stick
= 2 m 4 cm
= 2 x 100 + 4
= 204 cm

Length of the first piece = 64 cm
Length of the second piece = 1 u
Length of the third piece = 1 u + 100 cm

1 u + 1 u + 100 + 64 = 204
2 u + 164 = 204
2 u = 204 - 164 = 40
1 u = 40 ÷ 2 = 20 

Length of the third piece of stick
= 1 u + 100
= 20 + 100
= 120 cm

Answer(s): 120 cm