An air horn goes off every 48 seconds,another every 80 seconds. At 5:00 pm the two go off simultaneo | MathCelebrity Forum

An air horn goes off every 48 seconds,another every 80 seconds. At 5:00 pm the two go off simultaneo

math_celebrity

Administrator
Staff member
An air horn goes off every 48 seconds,another every 80 seconds. At 5:00 pm the two go off simultaneously. At what time will the air horns blow again at the same time?

We want to find the least common multiple of (48, 80). So we type this in our search engine, and we get:
240.

So 240 seconds is our next common meeting point for each air horn.

When we type 240 seconds into our search engine, we get 4 minutes.

We add the 4 minutes to the 5:00 pm time to get 5:04 pm.
 
Back
Top