Question

Find the LCM of 12 and 20, if their HCF is 4

Answer 1

Answer:

$given \: that \\ hcf \: of(12and20) = 4 \\ let \: n1 = 12 \\ and \: n2 = 20 \\ now \\ we \: know \: that \: \\ n1 \times n2 = lcm \times hcf \\ lcm = n1 \times n2 \div hcf \\ lcm = 12 \times 20 \div 4 \\ = 24 0 \div 4 \\ lcm= 60$

Hence LCM of (12 20) are 60