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?
Answer & explanation
Correct answer: option 4
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