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The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in 4 hours, then the speed of the first train is: ?->(Show Answer!)
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1. The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in 4 hours, then the speed of the first train is:





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  • By: guest on 01 Jun 2017 05.49 pm
    Let the speed of two trains be 7x and 8x km/hr. Then, 8x = 400 = 100 4 x = 100 = 12.5 8 Speed of first train = (7 x 12.5) km/hr = 87.5 km/hr.
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