Story Problem - Factoring

Question

An "A" train leaves a subway station every 13 minutes. An "E" train leaves evry 9 minutes. If both trains just left the station on parallel tracts, when will both leave the station together again?

Answer 1

Since LCM(9,13) = 9*13 = 117
After 117 minutes,
9 A trains will have left,
13 E trains will have left
and then the cycle starts over.

Trains run on tracks, not tracts.

Answer 2

117minutes

Answer 3

Since LCM(9,13) = 9*13 = 117
After 117 minutes,
9 A trains will have left,
13 E trains will have left
and then the cycle starts over.

Trains run on tracks, not tracts. ~Alisson~

Answer 4

One hundred seventeen mins.
And Alisson, you just copied and pasted what Steve wrote.

Answer 5

Ur all wrong 177 is not even an answer choice. Im on the same quiz the options are

A. 108
B. 36
C. 72
D. 24
And idk what the answer is

Answer 6

I agree