SOLUTION: A helicopter traveling at an average speed of 225 km/h left San Jose 1 hour after a train that had departed at 7:00 AM. If the helicopter over took the train in 0.8 hours find the

Question 921098: A helicopter traveling at an average speed of 225 km/h left San Jose 1 hour after a train that had departed at 7:00 AM. If the helicopter over took the train in 0.8 hours find the average speed of the train.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A helicopter traveling at an average speed of 225 km/h left San Jose 1 hour after a train that had departed at 7:00 AM.
If the helicopter over took the train in 0.8 hours find the average speed of the train.
:
The helicopter, in .8 hr, traveled the same distance that the train took 1.8 hr
time varies inversely to the speed
let t = the train's speed
=
cross multiply
1.8t = .8*225
1.8t = 180
t = 180/1.8
t = 100 km/hr is the train
:
:
Check this by finding the distance of each, should be the same
.8*225 = 180 km
1.8*100 = 180 km
RELATED QUESTIONS
A helicopter traveling at an average rate of speed of 150 miles per hour left from a... (answered by oberobic)

A cattle train left Portland and traveled toward San Francisco. 6 hours later a diesel... (answered by jorel555)

A diesel train left the station and travled toward the outer-most station at an average... (answered by chana)

jose left the white house and drove towards the recycling plant an a average speed of 40... (answered by htmentor)

On Sunday Kara started biking from her apartment at 7:00 AM for a charity bike-a-thon,... (answered by stanbon)

If a bullet train, traveling from san francisco to san diego, at an average speed of thee (answered by Alan3354)

At 9AM a train traveling 60 miles per hour leaves Los Angeles for San Francisco, a... (answered by stanbon)

An ocean liner, traveling at 30 km/h leaves port at 7:00am. At 10:00 am, a helicopter... (answered by josmiceli)

A man leaves his house at 8:00 AM and traveling at an average speed of 2 kph, arrives at... (answered by ikleyn)