A bus covers a certain distance in 16 h. It covers half the distance at 40 km/h and the rest at 60 km/h. Find the length of the journey.?

Let the total distance covered = L = Length of journey
According to the question,
(L/2 x 1/40) + (L/2 x 1/60) = 16
⇒ L/80 + L/120 = 16
⇒ (3L + 2L)/240 = 16
⇒ 5L = 16 x 240
∴ L = (16 x 240)/5 = 16 x 48 = 768 km