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A bus covers first 200 km of a journey i...

A bus covers first 200 km of a journey in 4 hours and the next 600 km in 6 hours. What is the average speed of the bus for the whole journey?
एक बस पहले 200 km की यात्रा 4 घंटे में और अगली 600 km की दूरी 6 घंटे में तय करती है। पूरी यात्रा के लिए बस की औसत गति क्या है?

A

100 km/h

B

90 km/h

C

60 km/h

D

80 km/h

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