SOLUTION: A bus trip takes 1 1/2 hours. By plane, the same trip is 30 minutes. How many times faster is it to go by plane?

Question 252121: A bus trip takes 1 1/2 hours. By plane, the same trip is 30 minutes. How many times faster is it to go by plane?
Found 2 solutions by stanbon, richwmiller:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A bus trip takes 1 1/2 hours. By plane, the same trip is 30 minutes. How many times faster is it to go by plane?
---------
Bus DATA:
time = (3/2) hrs ; distance = x miles ; rate = d/t = x/(3/2)= (2x/3) mph
----------------
Plane DATA:
time = (1/2) hr ; distance = x miles ; rate = x/(1/2) = 2x mph
--------------------
Compare the rates:
plane speed = k*bus speed
2x = k*(2/3)x
k = 3
---
The plane is 3 times as fast as the bus.
-------------
Shorter Version:
The plane takes (1/3) the time of the bus to cover the same distance.
Therefore the plane goes 3 times faster.
-------------
Cheers,
Stan H.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1 1/2 hours=1.5 hrs
30 minutes=.5 hrs
1.5/.5=3 times faster
RELATED QUESTIONS
A trip to Buffalo by car took 6 � hours. The same trip takes � hour by plane. The trip by (answered by richwmiller)
a trip to a nearby island takes 2 1/4 hours by boat and 1/4 by airplane. how many times... (answered by JulietG)
a trip to a nearby island takes 3 hours by boat and half an hour by airplane. How many... (answered by ikleyn)
a trip that takes 3 hours by car takes 30 minutes by plane. At these rates, how many... (answered by mananth,richwmiller)
A plane flies 270 miles against the wind in 2 hours 15 minutes, while on its return trip (answered by Alan3354)
1) A Commuter bus takes 2 hours to get downtown: an express bus, averaging 25mph faster,... (answered by Paul)
A small plane flying into the wind takes 3 hours 20 minutes to complete flight of 960... (answered by lwsshak3)
Dave and Sandy fly from Philly to Chicago, it takes 2 hours to go west and 1 and a half... (answered by gonzo)
a plane travels at 900km/h when there's no wind. The straight line distance between... (answered by josgarithmetic,Alan3354)