Clock's gears

In the clock machine, three gears fit together. The largest has 168 teeth, the middle 90 teeth, and the smallest 48 teeth. The middle wheel turns around its axis in 90 seconds. How many times during the day do all the gears meet in the starting position?

Correct answer:

n =  17

Step-by-step explanation:

168=2337 90=2325 48=243 LCM(168,90,48)=243257=5040  z=LCM(168,90,48)=5040  v=90/90=1 z/s  n1=z/v24 3600=5040/124 3600=7120=177117.1429  n=n1=17.1429=17



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