The Traffic Lights At Three Different Road Crossings Change After Eve

1.	The Traffic Lights At Three Different Road Crossings Change After Every 40 Sec, 72 Sec And 108 Sec Respectively. If They All Change Simultaneously At 5 : 20 : 00 Hours, Then Find The Time At Which They Will Change Simultaneously?
Answer» Traffic lights at three different road crossings change after every 40 sec, 72 sec and 108 sec respectively. Therefore, find the L.C.M. of 40, 72 and 108. L.C.M. of 40, 72 and 108 = 1080 The traffic lights will change again after 1080 seconds = 18 min The next simultaneous change takes place at 5 : 38 : 00 hrs. Traffic lights at three different road crossings change after every 40 sec, 72 sec and 108 sec respectively. Therefore, find the L.C.M. of 40, 72 and 108. L.C.M. of 40, 72 and 108 = 1080 The traffic lights will change again after 1080 seconds = 18 min The next simultaneous change takes place at 5 : 38 : 00 hrs.

The Traffic Lights At Three Different Road Crossings Change After Every 40 Sec, 72 Sec And 108 Sec Respectively. If They All Change Simultaneously At 5 : 20 : 00 Hours, Then Find The Time At Which They Will Change Simultaneously?

Answer»

Traffic lights at three different road crossings change after every 40 sec, 72 sec and 108 sec respectively.

Therefore, find the L.C.M. of 40, 72 and 108.

L.C.M. of 40, 72 and 108 = 1080

The traffic lights will change again after 1080 seconds = 18 min

The next simultaneous change takes place at 5 : 38 : 00 hrs.

Traffic lights at three different road crossings change after every 40 sec, 72 sec and 108 sec respectively.

Therefore, find the L.C.M. of 40, 72 and 108.

L.C.M. of 40, 72 and 108 = 1080

The traffic lights will change again after 1080 seconds = 18 min

The next simultaneous change takes place at 5 : 38 : 00 hrs.

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