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LCM and HCF
Three wheels make 36, 24, 60 revolution/min. Each has a black mark on it. It is aligned at the start.When does it align again for the first time?
Read Solution (Total 8)
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- LCM of 36, 24, 60 is 360.
Values are given in minutes. Hence wheels will align after 360 mins or 6 Hours - 10 years agoHelpfull: Yes(16) No(1)
- so simple
we have to just find out HCF of 36,24,60=12
12*3,12*2,12*5
that means after 3,2,5 each wheel has black mark at the start
time required to complete 36 rev is 60 sec then for 3 rev=5sec
ans=5sec - 10 years agoHelpfull: Yes(4) No(4)
- find out the LCM of 36,24,60
it is around 180
so after 180 min it will allign - 10 years agoHelpfull: Yes(3) No(10)
- LCM of 36,24,60 is=360.
so ans is 360 - 10 years agoHelpfull: Yes(1) No(0)
- after 360 min it will complete one revolution.
- 10 years agoHelpfull: Yes(0) No(0)
- ans: 360
since it aligned at starting point then it again aligned when they all strike same time..for this we have to find the lowest common factor of it... - 10 years agoHelpfull: Yes(0) No(0)
- 360
taking lcm
- 10 years agoHelpfull: Yes(0) No(0)
- 360 is the LCM of 24,36,60.
- 10 years agoHelpfull: Yes(0) No(0)
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