Arpit completes a journey in 10 hours. He covers half of the distance at 30 km/h, and the remaining half of the distance at 70 km/h. What is the length of the journey? |
500 km 210 km 320 km 420 km |
420 km |
Let Total distance = @D km According to question , \(\frac{D}{30}\) + \(\frac{D}{70}\) = 10 hours \(\frac{100D}{2100}\) = 10 D = 210 km Total Distance = 2D = 2 × 210 = 420 km |