M4maths
Maths Puzzle
Numerical Ability
LCM and HCF
Four wheels moving 12, 24, 20 and 30 revolutions in a minute starting at a certain point on the circumference downwards. After what interval of time will they come together again in the same position ?
Read Solution (Total 3)
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- 30 sec.
For 1 revolution four wheel takes 60/12=5 sec, 60/24=2.5 sec, 60/20=3 sec, 60/30=2 sec respectively and LCM of (5, 2.5, 3, 2) = 30.
So all the wheels will come together in same position after 30 sec. - 7 years agoHelpfull: Yes(2) No(0)
- 30 sec
LCM of (60/12 ,60/24,60/20,60/30) - 6 years agoHelpfull: Yes(2) No(0)
- X/y=1/3,then x^2+y^2/x^-y^2=?
- 7 years agoHelpfull: Yes(1) No(0)
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