SOLUTION: bus a takes 21 minutes to complete its route. bus b takes 35 minutes to complete its route. at what time will they arrive at the bus station at the same time?

Question 783894: bus a takes 21 minutes to complete its route. bus b takes 35 minutes to complete its route. at what time will they arrive at the bus station at the same time?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
bus a takes 21 minutes to complete its route. bus b takes 35 minutes to complete its route. at what time will they arrive at the bus station at the same time?
-------
Find the least common multiple of 21 and 35:
Prime Factor form:
21 = 3*7
35 = 5*7
-----
least common multiple = 3*5*7 = 105
----
Answer:: 105 minutes
===========
Cheers,
Stan H.

RELATED QUESTIONS
Bus A takes 21 minutes to complete its route. Bus B takes 35 minutes to complete its... (answered by josmiceli)

two buses arrive at the central avenue bus stop at 8 a.m. the route for the city loop bus (answered by ikleyn)

One bus route takes 25 minutes and the other bus route takes 55 minutes both buses leave... (answered by josmiceli)

3 buses leave a central station at 7am for a continuous circular route. One takes 8... (answered by JulietG)

Bus No. 26 takes 2 1/4 hours to complete the bus route. how many times can bus no. 26... (answered by dkppathak)

A snowstorm causes a bus driver to decrease the usual average rate along a 60-mile route... (answered by mananth)

A commuter bus takes 2 hours to get downtown; an express bus, averaging 25mph faster,... (answered by )

A commuter bus takes 2 hours to get downtown; an express bus, averaging 25mph faster,... (answered by htmentor)

On a journey a bus takes 35 minutes to travel the first 10 kilometres. It then travels a (answered by Alan3354)