Question

find the ratio between the LCM and HCF of 5, 15, or 20

Answer 1

LCM of 5 , 15 and 20 ----

is 60
HCF of these are ---

5

Ratio = 60 : 5 = 12:1

Answer 2

5=5*1
15=5*3
20=5*4

5 IS COMMON IN ALL SO HCF=5
.AND LCM = 5*4*3=60

HENCE =60/5=5/1
12:1 ANS