Question

a train covers 200 km in the first two hours then 126 km in the next 2 hours and finally 143 km in the last three hours find the average speed of the train for the whole of his journey​

Answer 1

Step-by-step explanation:

Total time = 2 + 2 + 3 = 7 h

Total distance = 200 + 126 + 143 = 469 km

Average speed =

$\frac{total \: distance}{total \: time} = \frac{469}{7} = 67$