The ratio of the speeds of two trains is 7:10. If the second train runs 400kms in 4 hours then the speeds of the first train is??
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Answer:
70 km/h
Step-by-step explanation:
since second train covers 400 km in 4 Hours, its speed is 100 km/h
substitute that in ratio, we get answer as 70 km/h. [ let the speed be z, .•. z/100= 7/10 .•. z= 70]
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