Given: median = 26 and mode = 29

By empirical formula,

mode = (3 × median) – (2 × mean)

⇒ 2 × mean = (3 × median) – mode

⇒ 2 × mean = (3 × 26) – 29

⇒ 2 × mean = 78 – 29

⇒ 2 × mean = 49

⇒ mean = 49/2 = 24.5