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The ratio between the speed of two trains is 7:8 .if the second train runs 400kms .in 5 hours , the speed of the 1st train is?
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The ratio between the speed of two trains is 7:8 .if the second train ...
Ratio between the speed of two trains

Let the speed of the first and second trains be 7x and 8x respectively.


Speed of the second train

Given, the second train runs 400kms in 5 hours.

Therefore, speed of the second train = 400/5 = 80 km/hour


Calculating speed of the first train

We know that,

Speed of first train : Speed of second train = 7:8

Therefore, 7x/8x = Speed of first train/80 km/hour

On simplifying, we get the speed of the first train = (7/8) x 80 = 70 km/hour


Conclusion

Therefore, the speed of the first train is 70 km/hour.
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The ratio between the speed of two trains is 7:8 .if the second train runs 400kms .in 5 hours , the speed of the 1st train is?
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