Answer:
B. 20
Step-by-step explanation:
We are given rational number as
[tex]\frac{3}{4}[/tex] and [tex]\frac{1}{5}[/tex]
We can see that
denominators are 4 and 5
So, we will find common denominator
So,
Common denominator is
[tex]=4\times 5[/tex]
[tex]=20[/tex]
So,
A common denominator is 20
