Question

find the ratio between the lcm and hcf of 5,15,20

Answer 1

1:3:4 of the hcf and 5:5 :4

Answer 2

5 = 1 x 5:
15 = 3 x 5
20 = 2 x 2 x 5

Lcm = 2x2x3x5 = 60 .
Hcf = 5

Ratio = 12 : 1 .