SOLUTION: several different bus routes stop at the corner of second st. and lincoln ave. A wilkenson bus arrives every 27 minutes and a harris road bus arrives every 15 min . if both buses

Algebra ->  Equations -> SOLUTION: several different bus routes stop at the corner of second st. and lincoln ave. A wilkenson bus arrives every 27 minutes and a harris road bus arrives every 15 min . if both buses       Log On


   

Question 574420: several different bus routes stop at the corner of second st. and lincoln ave. A wilkenson bus arrives every 27 minutes and a harris road bus arrives every 15 min . if both buses arrives at the stop at 5:o7 a.m , when will they again arrive at the same time? i tried ti draw out a chart then i got stuck. thanks
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the prime factors of 27 are ___ 3 * 3 * 3

the prime factors of 15 are ___ 3 * 5

so the prime factors of the LCM are ___ 3 * 3 * 3 * 5
___ this is the smallest number that is evenly divisible by 27 and 15
___ (and the number of minutes till the buses arrive together again)