Subscribe TechModgy to learn about new technologies!

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. 84.5 km/hr

C. 86.5 km/hr

D. 87.5 km/hr

Please do not use chat terms. Example: avoid using "grt" instead of "great".