Question

find the lcm of 80 and 140 if the hcf of those are 20

Answer 1

Answer:

$lcm \: of \: 80 \: and \: 140 \: is = 560$

Answer 2

Answer:

LCM - 80 = 2 × 2× 2 × 2 × 5.

LCM - 140 =2 ×2 ×2 ×2 ×2 ×5.

HCF - 20 =2 ×2 ×5.