The common denominator is 20 and option B is correct.
It is given that,
- Two fractions are [tex]\dfrac{3}{4}[/tex] and [tex]\dfrac{1}{5}[/tex].
Explanation:
To find the common denominator of given fractions, we need to find the LCM of the denominators 4 and 5.
Factor form of 4 and 5:
[tex]4=2\times 2[/tex]
[tex]5=5\times 1[/tex]
The LCM of the denominators 4 and 5 is:
[tex]LCM(4,5)=2\times 2\times 5[/tex]
[tex]LCM(4,5)=20[/tex]
Thus, the common denominator of given fractions is 20. Hence option B is correct.
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