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Abhi finishes a journey by car in 9 hour...

Abhi finishes a journey by car in 9 hours. He travels the first half of the journey at a speed of 40 km/h and the second half of the journey at a speed of 50 km/h. The total distance covered is:
अभि 9 घंटे में कार से यात्रा समाप्त करता है। वह यात्रा का पहला आधा भाग 40 किमी/घंटा की चाल से और दूसरा आधा भाग 50 किमी/घंटा की चाल पूरा करता है। तय की गई कुल दूरी है:

A

350 km

B

450 km

C

400 km

D

300 km

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