Two numbers are in the ratio 3:4, and their HCF is 5. Find their LCM.

Correct option is B

Given:
Numbers are in ratio 3:4
HCF = 5
Formula Used:
Numbers = $$3k \text{ and } 4k$$​​
LCM =$$\frac{Product \text{ of numbers}}{HCF}$$​​
Solution:
Numbers =$$3 \times 5 = 15 \text{ and } 4 \times 5 = 20$$​​
LCM =$$\frac{15 \times 20}{5}$$​​
LCM = 60
Therefore, the LCM is 60.