Question
The ratio between the speeds of two trains is 7: 8. If the second train runs 440 km in 4 hours, then the speed of the first train is:
A. 45.4 km/hr
B. 96.25 km/hr
C. 87.13 km/hr
D. 57.18 km/hr
Answer: B
Solution:
Let the speed of two trains be 7x and 8x km/hr
Then,
8x = (440/4)
= 110
x = (110/8)
= 13.75
Hence, speed of first train = (7 x 13.75) km/hr
= 96.25 km/hr