SOLUTION: two trains running in opposite direction with speeds 30 km/hr and 50km/hr crosees each other in 15 sec.what is the length of the fastest train?
Algebra ->
Average
-> SOLUTION: two trains running in opposite direction with speeds 30 km/hr and 50km/hr crosees each other in 15 sec.what is the length of the fastest train?
Log On
Question 477166: two trains running in opposite direction with speeds 30 km/hr and 50km/hr crosees each other in 15 sec.what is the length of the fastest train? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! two trains running in opposite direction with speeds 30 km/hr and 50km/hr cross each other in 15 sec. what is the length of the fastest train?
---
Combined speed = 80 (km/hr)(hr/3600 sec)(1000 m/km) = 22.22 meters.sec
----
15(22.22) = 333.33 meters in 15 seconds
-----
Equation:
The ratio of the trains speeds is 5:3
5x + 3x = 333.33
8x = 333.33
x = 41.666.
5x = 208.33 meters (length of the faster train)
-----
Cheers,
Stan H.
(