SOLUTION:
A train leaves a station and travels north at 75km/hr. three hours later , a second train leaves on a parallel track and travels north at 115km/hr. How far from the station will
Algebra ->
Linear-equations
-> SOLUTION:
A train leaves a station and travels north at 75km/hr. three hours later , a second train leaves on a parallel track and travels north at 115km/hr. How far from the station will
Log On
Question 740478:
A train leaves a station and travels north at 75km/hr. three hours later , a second train leaves on a parallel track and travels north at 115km/hr. How far from the station will the meet? Answer by checkley79(3341) (Show Source):
You can put this solution on YOUR website! D=RT
D=75T
D=115(T-3)
75T=115(T-3)
75T=115T-345
75T-115T=-345
-40T=-345
T=-345/-40
T=8.625 HOURS AFTER THE FIRST TRAIN LEAVES THEY MEET.
PROOF:
75*8.625=115(8.625-3)
646.875=115*5.625
646.875=646.875 MILES FROM THE STATION THEY WILL MEET.
(