Answer:
[tex]\frac{3}{8}[/tex]
Step-by-step explanation:
Total number of letters in the word = 8
Number of vowels = c
But, it is given that c = 3.
Number of consonants = 8 - 3 = 5
The part of all the letters of this word that are vowels is:
[tex]\frac{Number of vowels}{Total number of letters}[/tex]
[tex]=\frac{3}{8}[/tex]
Hence, the part of all the letters of this word that are vowels is [tex]\frac{3}{8}[/tex] .