Question
Two numbers are in the ratio of 4:5, respectively. If their
HCF is 18, then find their LCM.Solution
Since their HCF is 18.
So, numbers are (4 x 18 = 72) and (5 x 18 = 90).
We know that product of numbers = HCF x LCM
72 x 90 = 18 x LCM
Or, 6,480 = 18 x LCM
So, LCM = (6,480/18) = 360
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