LCM B2

Find the LCM of 30 and 40.

Solution 

2	30	40
2	15	20
2	15	10
3	15	5
5	5	5
	1	1

LCM = 2 x 2 x 3 x 5 x 11

       = 4 x 165  (because 3 x 5 x 11=165)

       = 330

Hence LCM is 330

TRY THIS.............

Find the LCM of 20 and 48.