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A train starts form station A at 1pm and...

A train starts form station `A` at 1pm and reaches station `B` at 3pm, after travelling 108 km. It halts at station `B` for one hour and then starts for station `C` which is 42 km from station `B`. It reaches station `C` at 7pm on the same day. The average speed of the train for the whole journey from `A` to `C` is

A

`68 km//hr`

B

`25 km//hr`

C

`30 km//hr`

D

`35 km//hr`

Text Solution

Verified by Experts

The correct Answer is:
B
`S=108 +42=150 km`
`t=2 +1 +3 =6hr`
`lt v gt =(150)/(6)=25 km//hr`.
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RESONANCE-DAILY PRACTICE PROBLEM-DPP No.11
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