The ratio of two numbers is 4 : 5, and their HCF is 3. What is their LCM?

48 80 60 36

60

The ratio of two numbers is 4 : 5. HCF is 3 So, the number becomes 4 × 3 = 12 5 × 3 = 15  As, we know  L.C.M × H.C.F = Product of two numbers  L.C.M × 3  = 12 × 15  L.C.M = 60