The ratio between the Speed of two trains is 7: 8. If the second train runs 440 kms in 4
hours, then the speed of the first train is:
47.4 km/hr
57.19 km/hr
68.13 km/hr
None of these
Explanation:
Let the speed of two trains be 7x and 8x km/hr.
Then, 8x = (440/4) = 110
x = (110/8) = 13.75
Speed of first train = (7 x 13.75) km/hr = 96.25 km/hr.
Let the speed of two trains be 7x and 8x km/hr.
Then, 8x = (440/4) = 110
x = (110/8) = 13.75
Speed of first train = (7 x 13.75) km/hr = 96.25 km/hr.