The ratio of average speed of onward to the average speed of return journey is 7 ∶ 5. If the time taken in the whole journey of 490 km is 24 hours. Find the speed of train in onward journey?

1
34.5 km / hr
2
24.5 km / hr
3
12.5 km / hr
4
45.5 km / hr
5
15.5 km / hr

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