SOLUTION: A train left Podunk and traveled west at 70 km/h. Two hours later, another train left Podunk and traveled east at 90km/h. How many hours had the first train traveled when they were
Algebra.Com
Question 410876: A train left Podunk and traveled west at 70 km/h. Two hours later, another train left Podunk and traveled east at 90km/h. How many hours had the first train traveled when they were 1420 km apart?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = distance 2nd train goes when they are 1420 km apart
The 1st train has gone km when the 2nd train leaves.
Both trains travel for the same length of time when 2nd train leaves
2nd train:
1st train:
km
By substitution:
hrs
The 1st train traveled hrs
when they are 1420 km apart
check answer:
RELATED QUESTIONS
When a train left Podunck and traveled West 70 KM/H, 2 hours later, another train left... (answered by ankor@dixie-net.com,Nate)
a train left detroit and traveled west at 70 km/h. two hours later, another train left... (answered by JulietG,lwsshak3)
A train left the North Pole and traveled west at 70km/hr. Two hours later, another train (answered by Alan3354,richwmiller)
T 10:15 P.M., a train left Petersburg, Virginia, travelling east at 40 mi/h. Two hours... (answered by mananth)
A cattle train left the station and traveled east at an average speed of 25k/h. Sometime... (answered by ikleyn)
A diesel train left the station and travled toward the outer-most station at an average... (answered by chana)
A cattle train left Miami and traveled toward New York. 14 hours later a diesel train... (answered by checkley71)
A cattle train left Miami and traveled toward New York. 14 hours later a diesel train... (answered by checkley77)
A cattle train left Miami and traveled toward New York. 14 hours later a diesel train... (answered by jrfrunner,ankor@dixie-net.com)