LCM

LCM=least common multiple 100=100,200 50=50,100,150,200.

I first found the LCM of a 100 the multiples of a 100 are 100,200,300,400,500,600,700,800,900,1000.................  Then I found the LCM for 50 the multiples of 50 are 50,100,150,200,250,300,350,400,450,500,550,600,650,700,750,800,850,900,950,1000................  The LCM for 100 and 50 is 1 00.