Two numbers are in the ratio of 6: 5. If their HCF is 3, then what is the LCM of the two numbers?

64 110 90 80

90

Two numbers are in the ratio of 6 ∶ 5. Their HCF is 3.  First number = 6 × 3 = 18 Second number = 5 × 3 = 15 LCM (18, 15) = 3 × 6 × 5 = 90