SOLUTION: A freight train left Bangalore and traveled south. One hour later a passenger train left traveling 20 km/h faster in an effort to catch up to it. After three hours the passenger
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: A freight train left Bangalore and traveled south. One hour later a passenger train left traveling 20 km/h faster in an effort to catch up to it. After three hours the passenger
Log On
Question 946314: A freight train left Bangalore and traveled south. One hour later a passenger train left traveling 20 km/h faster in an effort to catch up to it. After three hours the passenger train finally caught up. Find the freight train's average speed. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A freight train left Bangalore and traveled south. One hour later a passenger train left traveling 20 km/h faster in an effort to catch up to it. After three hours the passenger train finally caught up. Find the freight train's average speed.
-------------------
Passenger train DATA::
time = 3 hrs ; rate = x+20 km/hr ; distance = r*t = 3(x+20) km
-----------------
Freight train DATA:
time = 4 hrs ; rate = x km/hr ; distance = r*t = 4x km
-----
Equation:
distance = distance
4x = 3x+60
x = 60 km/hr (freight train rate)
------------------
Cheers,
Stan H.
-----------------
(