Question

The traffic lights at three different road crossings change after 52 seconds 80 seconds and 110 seconds respectively. if they change simultaneously at 8pm at what time will they change simultaneously again?.​

Answer 1

Answer:

They will change simultaniously after 11,440 seconds

Step-by-step explanation:

The L.C.M of 52, 80, 110 is 2 × 2 × 2 × 2 × 5 × 11 × 13 = 11,440.

So the all will change simultaniously after 11,440 seconds.