The ratio between the speeds of two trains is 8 : 9. If the second train runs 405 kms in 5 hours, then the speed of the first train is	Choose the correct option
A) 87.5 km/h  B) 72 km/h  C) 70 km/h  D) 80 km/h  E) 81 km/h
72 km/h   72 km/h
<result>B</result>
The ratio between the speeds of two trains is 8 : 9. If the second train runs 405 kms in 5 hours, then the speed of the first train is