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The ratio between the speeds of two t...

The ratio between the speeds of two trains is 7:8. If the second train runs 400 kms in 4 hours, then the speed of eth first train is `70\ k m//h r` b. `75\ k m//h r` c. `84\ k m//h r` d. `87. 5\ k m//h r`

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The ratio between the speeds of two trains is 7:8. If the second train runs 400 kms in 4 hours, then the speed of the first train is:

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