A

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Q. 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 ?

  • (A) 83.5 km/hr
  • (B) 86.5 km/hr
  • (C) 84.5 km/hr
  • (D) 87.5 km/hr
  • Correct Answer - Option(D)
  • Views: 7
  • Filed under category Math
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Explanation by: Admin
Let the speeds of two trains be 7X and 8X km/hr.
8x = 400/4
=> x= 12.5 km/hrX=4004=>X=12.5Km/hr
So speed of first train is 12.5*7 = 87.5 km/hr

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